1. OMG - Usher feat. Will.i.am
2. California Gurls - Katy Perry feat. Snoop Dogg
Usher returns to #1, extending his reign atop to 2 weeks. Katy Perry joins a line of recent big debuts on the Hot 100 with her new single "California Gurls" featuring Snoop Dogg, which debuts at #2 this week, following Eminem's #1 debut last week with "Not Afraid," the single sold a cool 294,000 copies, more interestingly "Gurls" opens at #31 on Billboard's Radio Songs with 34 million listener impressions, the biggest debut since Mariah Carey's "Touch My Body" debuted at #23. Next week Miley Cyrus' new single "Can't Be Tamed," could also earn herself a top 5 debut also.
8. Alejandro - Lady Gaga
Lady Gaga ac ends into the top 10 with "Alejandro," scoring her 7th feat.
18. Billionaire - Travie McCoy featuring Bruno Mars
Front man for American band Gym Class Heroes lands his first solo top 20 with "Billionaire," the lead single for his forthcoming debut album, Lazarus. This also Bruno Mars' second feat, following his recent chart topper with Atlanta-based rapper B.o.B. on "Nothing on You."
19. La Roux - Bulletproof
Also scoring their first top 20 is UK-based electronic duo La Roux with "Bulletproof," a single which landed the duo their first UK chart topper last year.