Other #1 songs on December 21, 2009
Across genres and charts

#1 country song

Need You Now

Lady Antebellum

#1 dance track

Bad Romance

Lady Gaga

#1 R&B song

I Invented Sex

Trey Songz featuring Drake

#1 song in the UK

Killing in the Name

Rage Against the Machine

#1 song

Empire State of Mind

Jay-Z and Alicia Keys

The #1 Movie
At the box office on December 21, 2009

Avatar

Directed by James Cameron

Notable December 21 Birthdays
Born in the 2000s

Cooper Flagg

Basketball Player

Born December 21, 2006