Justin Timberlake's "SexyBack" holds firm at No. 1 on the Billboard Hot 100 for a third week and fronts the Pop 100 and Hot Digital Songs charts for a second. Fergie's "London Bridge" is No. 2 on the Hot 100, while the Pussycat Dolls' "Buttons" featuring Snoop Dogg jumps 4-3, trading posts with Gnarls Barkley's "Crazy."

Sean Paul's "(When You Gonna) Give It Up to Me" featuring Keyshia Cole holds at No. 5, Snow Patrol's "Chasing Cars" ascends 7-6, and Ne-Yo's "Sexy Love" drops 8-7 but remains atop Hot Ringtones for a second week.

Elsewhere on the Hot 100, Nickelback's "Far Away" rises 9-8, Hinder's "Lips of an Angel" leaps 18-9, and Nelly Furtado's "Promiscuous" featuring Timbaland slides 6-10 to round out the top tier.

Ciara's "Get Up" featuring Chamillionaire is the Hot 100's greatest airplay gainer, though it drops 21-22, and OK Go's "Here It Goes Again" is the greatest sales gainer, rocketing 87-38 to give the band its highest position ever on the chart.

Beyonce earns her highest Hot 100 debut, as "Ring the Alarm" enters the chart at No. 12. Also new are Jesse McCartney's "Right Where You Want Me" (No. 67), Tim McGraw's "Taylor Swift" (No. 86), Nick Lachey's "I Can't Hate You Anymore" (No. 87), Justin Timberlake's "My Love" featuring T.I. (No. 89), Webstar & Young B's "Chicken Noodle Soup" featuring the Voice Of Harlem (No. 92), Unk's "Walk It Out" (No. 95), and Rascal Flatts' "My Wish" (No. 99).

Janet Jackson and Nelly's "Call on Me" ascends 7-1 on the R&B/Hip-Hop Songs chart, sending Chingy's "Pullin' Me Back" featuring Tyrese to No. 2 after one week on top. It's Jackson's 15th No. 1 hit on this chart.

Mana's "Labios Compartidos" spends a seventh week atop Hot Latin Songs, and Natasha Bedingfield's "Unwritten" leads Adult Contemporary for a second frame.

On Hot Country Songs, Steve Holy's "Brand New Girlfriend" rises one rung, overtaking the Wreckers' "Leave the Pieces," which falls to No. 3 after two weeks at the top.

Red Hot Chili Pepper's "Tell Me" captures the No. 1 spot on the Modern Rock chart, swapping positions with Three Days Grace's "Animal I Have Become," and Stone Sour's "Through Glass" remains atop Mainstream Rock for a second week.