The #1 dance song on December 21, 2003

Me Against the Music By Britney Spears featuring Madonna

Other #1 songs on December 21, 2003

#1 Hit Song

Hey Ya!
OutKast

UK #1 Song

Mad World
Michael Andrews and Gary Jules

#1 R&B Song

You Don't Know My Name
Alicia Keys

#1 Country Song

There Goes My Life
Kenny Chesney

#1 Alternative Hit

Numb
Linkin Park

Notable December 21 birthdays in the 2000s

Maite Padilha
Movie Actor
Born December 21, 2000
JonMarco Gaydos
Scooter Rider
Born December 21, 2002
Akira Van
Gymnast
Born December 21, 2006
Montserrat Garcia
TV Actress
Born December 21, 2004