U.S. top 10:
1) Bad Romance - Lady GaGa
2) TiK ToK - Ke$ha
3) Empire State of Mind (feat. Alicia Keys) - Jay-Z
4) Fireflies - Owl City
5) Replay - Iyaz
6) Meet Me Halfway - Black Eyed Peas
7) Whatcha Say - Jason Derulo
8) 3 - Britney Spears
9) Need You Now - Lady Antebellum
10) Party In the U.S.A. - Miley Cyrus
Any new releases that I should know about? "Whatcha Say", "Need You Now", and "Party In the U.S.A." have seriously overstayed their annoying welcomes.
(If they ever were welcomed at all) The U.K. iTunes battle seems more interesting.