The Billboard Hot 100 for the 9/26/2009 issue

Now Last Weeks Peak

1 1 14 1 I Gotta Feeling - The Black Eyed Peas ()

2 2 11 2 Down - Jay Sean Featuring Lil Wayne (/Universal Republic)

3 3 5 2 Party In The U.S.A. - Miley Cyrus ()

4 4 7 3 Run This Town - Jay-Z, Rihanna & Kanye West ()

5 5 33 4 Use Somebody - Kings Of Leon (/RMG)

6 6 21 2 You Belong With Me - Taylor Swift (/Universal Republic)

7 9 5 7 Whatcha Say - Jason DeRulo (/Warner Bros.)

8 7 10 7 Obsessed - Mariah Carey (/IDJMG)

9 8 13 8 Hotel Room Service - Pitbull (/RMG)

10 13 16 7 Good Girls Go Bad - Cobra Starship Featuring Leighton Meester (/RRP)

11 12 9 11 She Wolf - Shakira ()

12 11 25 3 Knock You Down - Keri Hilson Featuring Kanye West & Ne-Yo (/Interscope)

13 10 19 2 Best I Ever Had - Drake (/Universal Motown)

14 17 15 14 Throw It In The Bag - Fabolous Featuring The-Dream (/IDJMG)

15 19 27 1 Boom Boom Pow - The Black Eyed Peas (/Interscope)

16 16 18 10 Battlefield - Jordin Sparks (/JLG)

17 14 13 14 Break Up - Mario Featuring Gucci Mane & Sean Garrett (/RMG)

18 44 3 18 Paparazzi - Lady Gaga (/Interscope)

19 24 9 19 Be On You - Flo Rida Featuring Ne-Yo (/Atlantic)

20 18 14 18 Big Green Tractor - Jason Aldean ()