Katy Perry's "E.T.," featuring Kanye West, spent a second week at No. 1 on the Billboard Hot 100 singles chart on Thursday, bolstered by the premiere of its effects-heavy video a week ago.

Rihanna's "S&M" was also unchanged, at No. 2, while the Black Eyed Peas' "Just Can't Get Enough" rose two to No. 3. Cee Lo Green's "F**k You (Forget You)" at No. 4 and Lady Gaga's "Born This Way" at No. 5 each slipped one place.

Chris Brown's "Look at Me Now," featuring Lil Wayne and Busta Rhymes, rose one to No. 6; Jeremih's "Down on Me," featuring 50 Cent, jumped two to No. 7; Jennifer Lopez's "On the Floor," featuring Pitbull, was also up two, to No. 8; and Pink's "F**kin' Perfect" dropped one to No. 9.

British singer/songwriter Adele claimed her first top-10 hit in the United States as "Rolling in the Deep" soared seven places. The track comes from her hit album "21," which recently ruled the Billboard 200 chart for three weeks, and is expected to reclaim its crown when data are released next Wednesday.