Rounding out the Top Five were a pair of usual suspects: Lady Antebellum’s Need You Now at Four and the 33rd NOW! comp at Five. Only one more new release managed to break into the Top 10 on a slow sales week — overall Top 200 sales were down 23 percent compared to the same week last year — and it was Madonna’s Sticky and Sweet Tour live album at Number 10.

Usher scored the week’s best Hot 100 debut with Raymond v Raymond’s “OMG” featuring Will.i.am at Number 14, which marks the third best Hot 100 debut of Usher’s career following 1998’s “Nice & Slow” and “My Way.” Lady Gaga entered yet another single, The Fame Monster’s “Alejandro,” which bowed at Number 72. Fresh off Erykah Badu’s controversial new video for “Window Seat,” the New Amerykah Part Two: Return of the Ahnk song debuted at Number 95. In one more interesting piece of chart news, Pearl Jam’s “Just Breathe” has quietly enjoyed a 12-week run on the Hot 100, making it Eddie Vedder and Co.’s longest-running Hot 100 single since “Last Kiss” spent 21 weeks on the chart in 1999.

“Rude Boy” officially has become Rihanna’s most successful single since “Umbrella.” Thanks to the Rated R singer’s high-wattage performance of “Rockstar 101″ on American Idol, expect that single to give “Rude Boy” some company on the Hot 100 next week.

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Despite falling to Number Two in its second week, Bieber’s My World 2.0 became the first album since the Beatles’ 2000 disc 1 to improve on its Number One debut week numbers the following week — My World 2.0’s sales rose 3 percent to 291,000 copies. Following the NOW 33 comp at Number Three, troublemaker Erykah Badu’s New Amerykah Part Two: Return of the Ahnk debuted at Number Four with 110,000 copies, just slightly off Part One’s 125,000 in 2008. Lady Antebellum’s Need You Now rounded out the Top Five.

One more debut of note: Method Man, Ghostface Killah and Raekwon’s Wu-Massacre team-up entered the charts at Number 12.

Justin Bieber, who topped the Billboard 200 album chart this week with My World 2.0, was also a big story on the Hot 100, landing three singles on the chart: “Baby” with Ludacris at Number Eight, the week’s highest debut “Eenie Meenie” at Number 30 and “That Should Be Me” at Number 92. The teenage hit machine has now placed five singles from his new My World 2.0 on the Hot 100, putting him well on his way of eclipsing the seven Hot 100 singles My World produced.

T-Pain’s “Reverse Cowgirl” was the Hot 100’s second-highest debut at Number 75, followed by Young Money’s “Roger That” at 86 and, further down, Timbaland and Katy Perry’s “If We Ever Meet Again” at 96.

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The Big News: As expected, Justin Bieber dominated the Billboard 200 in My World 2.0’s debut week in stores, selling 283,000 copies to earn his first Number One debut. My World 2.0 improved on the success of its 2009 predecessor, which arrived at Number Six with 137,000 copies last November. In fact, Bieber was on such a roll, sales of My World are up 50 percent from the previous week as either hardcore fans or misinformed parents bought the two albums together. My World finished the week at Number Five, its highest point in 19 weeks on the charts, according to Nielsen SoundScan.

The week’s Number Two album, Monica’s Still Standing, came in 100,000 copies behind Bieber but marked her highest-charting first week since After the Storm hit Number One in 2003. The R&B singer beat out her last album The Makings of Me, which only mustered a Number Eight debut and 93,000 in first week sales in 2006. One more new release managed to break the 100K mark, and it was the ever-successful Now! brand’s 33rd volume at Number Three with 135,000 copies sold. Last week’s Number One, Lady Antebellum’s Need You Now, slipped to Number Four to make room for the three debuts at the top.

Debuts: She and Him’s Volume 2 easily scored the duo’s best debut as Zooey Deschanel and M. Ward entered the charts at Number Six with 47,000 copies, a jump from Volume One’s Number 71 peak in 2008. Further down, Scorpions’ final album Sting in the Tail came in at 23, Snoop Dogg’s More Malice debuted at 29 and Goldfrapp’s Head First scored Number 44 in its first week.

Last Week’s Heroes: Even though Need You Now dropped to Number Four, the bestselling album of 2010 so far has only experienced a 16 percent decrease in sales in its ninth week, surpassing the three-quarter mark to double platinum. Speaking of platinum, Sade’s Soldier of Love reached the million plateau in only its seventh week on the charts. Looking forward, Bieber faces some tough competition this week, including his mentor Usher’s new album Raymond v Raymond and Erykah Badu’s New Amerykah Two, so don’t be surprised if the Canadian singer relinquishes his top spot next week.

Catch up on all of Rolling Stone’s album reviews here.

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Justin Bieber, whose My World 2.0 is expected to top next week’s Billboard 200 album chart with sales in the quarter-million area, scored two tracks on the Hot 100, led by “Baby” featuring Ludacris, which rose from 12 last week to Number 10 this week. Bieber also claimed the week’s highest-debuting Hot 100 track, as My World 2.0’s “U Smile” bowed at Number 27. T.I.’s comeback single “I’m Back” debuted at Number 44, Usher’s “More” arrived at 76 and The-Dream’s “Love King” premiered at 92.

Current Billboard 200 champs Lady Antebellum’s “Need You Now” placed Number Four in its 32nd week on the chart and Taio Cruz and Ludacris’ “Break Your Heart” rounded out the Top Five.

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Debuts: Only one more new release managed to crack the Top 20: The White Stripes’ live album Under Great White Northern Lights, which moved 29,000 units to grab Number 11. Further down, the Drive-By Truckers enjoyed the best chart debut in their career as The Big To-Do placed at Number 22 in its first week, an improvement on Brighter Than Dark’s Creation’s Number 37 peak in 2008. The Dropkick Murphys’ Live on Lansdowne, Boston MA entered at Number 25, Flobots’ Survival Story came in at 43 and the Disco Biscuits’ Planet Anthem danced in at 140.

Last Week’s Heroes: Despite dominating the Hot 100 with a pair of hits, Ludacris’ new disc took a 55 percent hit from its debut week sales. Gorillaz also saw the population of Plastic Beach drop by 66 percent as the animated band’s third album fell from Number Two to Nine in its second week. It was a slow sales week as no albums managed to break the 100,000 mark, but next week Justin Bieber’s My World 2.0 is all but assured big numbers and the Number One spot.

Nearly four decades after his death, Jimi Hendrix, Rolling Stone’s current cover star, entered the charts at Number Four with his collection of unearthed tracks Valleys of Neptune, which sold 95,000 copies. Rounding out the Top Five was another debut, Gary Allan’s Get Off on the Pain. In platinum news, Lady Gaga’s The Fame surpassed the three million mark and Justin Bieber’s My World scored the 16-year-old singer his first million seller.

Debuts: It was a big week for new albums as James Mercer and Danger Mouse’s Broken Bells entered the charts at Number Seven with their self-titled debut, which sold 49,000 in its first week. Further down, Black Rebel Motorcycle Club’s Beat the Devil’s Tattoo came in at 56, Frightened Rabbit’s Winter of Mixed Drinks took 78 with 6,900 copies and the Pavement greatest hits collection Quarantine the Past bowed at 149.

Last Week’s Heroes: The influx of debuts in the Top 10 pushed Sade’s Soldier of Love out of the Top Five for the first time since its release five weeks ago, with the album landing at Six. The biggest drop from last week goes to Lifehouse’s Smoke & Mirrors, which fell from Number Six in its debut week to 34 thanks to a 74 percent sales decrease. With Ludacris’ pair of tracks in the Top 10 of the Hot 100 — “How Low” and his guest spot on Taio Cruz’s current Number One “Break Your Heart” — expect Battle of the Sexes to remain in the top spot this time next week.

Gokey’s Number Four debut marks the second-best Idol opening week by a Season Eight contestant. Adam Lambert’s For Your Entertainment opened at Number Three in November 2009, though Lambert’s debut week sales of 198,000 far exceeded the 65,000 Gokey sold. Gokey did out-chart Kris Allen’s self-titled post-Idol (at Number 11 in November) and Allison Iraheta’s Just Like You, which peaked at 35.

Debuts: Two more newbies broke into the Top 10: Raheem DeVaughn’s Love & War Masterpiece at Nine and Easton Corbin’s self-titled at 10. DJ Khaled’s Victory debuted at 14, Peter Gabriel’s covers album Scratch My Back bowed in at Number 26 and John Hiatt’s Open Road scored 71.

Last Week’s Heroes: In its sixth week, Lady Antebellum somehow managed a six percent upswing in Need You Now sales while Soldier of Love dropped off 37 percent. With the surge of debuts near the top of the charts, a bunch of Top 10 mainstays found themselves in the teens for the first time, like Lil Wayne’s Rebirth and, after 15 weeks and 5.6 million copies, Susan Boyle’s I Dreamed a Dream, which fell from Eight to 18. Next week, we’ll see if Gorillaz’ Plastic Beach can shake up the Top Two.

The Black Eyed Peas captured the Number One spot on the Billboard Hot 100 for the second straight week as “Imma Be” bought off the continually rising Young Money track “Bedrock,” which moved up one spot to Number Two. Between “Imma Be,” “Boom Boom Pow” and “I Gotta Feeling,” Black Eyed Peas have maintained the Number One spot on the Hot 100 for a large chunk of the last year, and The E.N.D.’s first two singles racked up a record-breaking 26 consecutive weeks on the charts between April through October 2009. Ke$ha’s “TiK ToK,” which enjoyed a Hot 100 chart-topping run comparable to the Peas, dropped from Two to Four this week.

Elsewhere on the Hot 100, Rihanna’s “Rude Boy” was the biggest gainer in the Top 10, leaping from Number 23 last week to a Number Nine finish in only its third week on the chart. Ke$ha’s “Blah Blah Blah” with 3Oh!3 seems unlikely to replicate its predecessor’s glory as her second Animal single remained stuck in Number 11 for the second straight week (it has peaked at Seven so far). After getting skewered by the Saturday Night Live cast, the bad news continued for the “We Are the World 25 for Haiti” crew kept on coming, and the charity single plummeted from Number Six all the way down to Number 36.

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The usual suspects rounded out the Top 10: Black Eyed Peas’ The E.N.D. at Four, Lady Gaga’s The Fame at Five and Lil Wayne’s Rebirth at Six. Ke$ha’s sales of Animal were up seven percent and the album jumped from 14 to Seven, thanks in large part to her new single “Blah Blah Blah.” Her talent show cover of “Karma Police” probably didn’t hurt.

Debuts: It was yet another slow debut week on the charts. Besides Cash, only Alkaline Trio’s This Addiction managed to break into the Top 20, grabbing Number 11 with 26,000 copies sold. The Rocket Summer’s Of Men and Angels debuted at Number 38, High on Fire’s Snakes for the Divine entered at 62 and Joanna Newsom’s Have One on Me bowed at Number 74 with 7,400 copies.

Last Week’s Heroes: Sade and Lady Antebellum’s clutch on Numbers One and Two seems unshakable as the pair continue to sell 100K+ copies a week, more than double their closest competitors. With another slate of smaller new releases on deck for this week, don’t anticipate much changes at the top of the charts until possibly next week, when Gorillaz’s Plastic Beach could give Sade and Antebellum a run for the top spot.

Check out photos of the Peas’ tour-opening show in Atlanta.

Meanwhile, Ke$ha fell just two weeks shy of tying chart history for longest tenure at Number One with a debut single; Debby Bonne’s 11 weeks at Number One with her 1977 debut single “You Light Up My Life” remains the record holder. (Looks like the Peas’ epically long video helped their cause.) Meanwhile, “We Are the World 25 For Haiti” took a small but giant step back, slipping from Number Two to Number Six this week — a minor fall, but one that likely means the new version of the classic song won’t follow its predecessor’s path to the Number One spot on the Hot 100.

The chart’s biggest surprise came courtesy of k.d. lang, who scored her first Hot 100 since 1992’s “Constant Craving” with her 2010 rendition of Leonard Cohen’s, what else, “Hallelujah,” which she performed at the Vancouver Winter Olympics’ opening ceremony. The song debuted at Number 61.

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After the top two, sales nosedive, with the week’s Number Three album, Black Eyed Peas’ The E.N.D., selling less than half the copies Lady Antebellum did. Rounding out the Top Five were Lady Gaga’s The Fame, which when combined with sales of The Fame Monster puts Gaga in line for quadruple-platinum status in the coming weeks, at Number Four and Lil Wayne’s Rebirth at Five with 58,000 copies sold.

Debuts: It was a bleak week for new releases as the highest-charting debut was Story of the Year’s Constant way down at Number 42 with 14,000 copies. Only one other debut managed to break into the Top 100: Freeway and Jake One’s Stimulus Package at 61. On the indie front, Mumford & Sons’ Sign No More entered the charts at 116, Local Natives’ Gorilla Manor charted at 142 and the new Wu-Tang comp Return of the Wu and Friends landed at 163.

Last Week’s Heroes: Last week’s bestsellers simply jostled for better sales position this week with no new releases to challenge them. TobyMac’s Tonight, which was Number Six in its debut last week, dropped down to Number 16, making it the only album from last week’s Top 10 not to repeat the feat. (Alicia Keys’ The Element of Freedom, which rose from 12 last week to Number Seven, filled the vacancy.) With no other major releases on the horizon this week, it looks as though Sade Adu will once again be queen of the charts next week.

While the “We Are the World” remake debuted at Number Two on the Billboard Hot 100, chart history demonstrates that Ke$ha shouldn’t let down her guard just yet: Back in 1985, when the original “We Are the World” was released, it took over a month for the single to climb to the top spot. Once there, it didn’t relinquish Number One for nearly four weeks. That “We are the World” entered at Number 21 in its Hot 100 debut, so the 25th anniversary rendition of the song is off to a much better chart start than its predecessor.

In addition to “We Are the World 25 For Haiti,” Ke$ha might also face some stiff competition from former Hot 100 incumbents the Black Eyed Peas, whose “Imma Be” at Number Three could make a run for Number One now that its 10-minute-long video is out. Ke$ha may even challenge herself, because “Blah Blah Blah,” another single off her debut Animal, jumped 11 spots to Number 11 on the Hot 100.

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Three more new albums debuted inside the Top 10, led by Jaheim’s Another Round, which sold 112,000 copies to take Number Three. Country musician Josh Turner’s Haywire and Christian rapper TobyMac’s Tonight entered the charts at Five and Six, respectively. The unearthed Jimi Hendrix song “Valleys of Neptune” claimed the Number One spot on the Singles chart, ahead of artists like Lady Gaga and Sade.

Debuts: Outside the Top 10, the next highest charting debut was Dave Matthews and Tim Reynolds’ third live acoustic album Live in Las Vegas at Number 17 with 35,000 copies. After shattering February 14th records at the box office, the Valentine’s Day soundtrack bowed at Number 20. Elsewhere, Massive Attack’s Heligoland slotted at Number 46, Yeasayer’s second album Odd Blood scored Number 62 and Hot Chip’s One Life Stand took 97.

Last Week’s Heroes: While Lady Antebellum relinquished the Number One spot after holding strong against Lil Wayne and the Hope For Haiti Now collective, Need You Now only experienced a one-percent sales drop from last week, which speaks volumes about the album’s durability. Weezy, on the other hand, saw his Rebirth sales drop 49 percent as his rock-rap LP sold another 89,000 copies, good for Number Four. By comparison, however, Tha Carter III sold more copies in its second week (309,000) than Rebirth has sold in its first two weeks combined (265,000.) This week’s biggest drop, however, was reserved for Nick Jonas and the Administration’s Who I Am, as the JoBro’s side project plummeted from Number Three to Number 28 following a 71 percent sales drop from its debut week.

Other members of the over 100K club this week include Brad Paisley’s American Saturday Night (Number Two on Top 200, Four on Top Albums) with 129,000 copies, the Essential Michael Jackson collection at Number Five on the Top Albums list thanks to 125,000 copies and Rob Thomas’ Cradlesong, which sold 121,000 copies to place Number Three on the Top 200. Jackson also grabbed all of the Top 10 spots on the Top Catalog Albums chart. Amazingly, roughly 82 percent of Jackson’s album sales have come from CD purchases and not digital outlets, Billboard reports.

Debuts: Jackson’s chart reign almost overshadows the stellar debut of Wilco’s Wilco (The Album), which tied the debut of 2007’s Sky Blue Sky by bowing in at Number Four, selling 98,000 copies in the process. A pair of self-titled albums entered the charts at Six and Seven as Jeremih and Killswitch Engage made the cut with their eponymous releases. Other notables include Moby’s Wait For Me at 22, Levon Helm’s Electric Dirt at 36 and the Wu-Tang Clan project Chamber Music at 49.

Last Week’s Heroes: Michael Jackson’s increased sales kept him in the game while the rest of last week’s Top 10 took a tumble. Regina Spektor’s Far, a shocker in the Number Three spot seven days ago, dropped down to 26. The Jonas Brothers’ Lines, Vines and Trying Times fell from Two to Eight while Eminem’s Relapse was finally booted from the Top Five, falling from Five to Nine. Next week, with no major releases on this week’s slate, we’ll find out if the Michael Jackson discography can make a run at outselling the entire Top 200.