Other #1 songs on March 21, 2007
Across genres and charts

#1 alternative hit

Pain

Three Days Grace

#1 country song

Beer in Mexico

Kenny Chesney

#1 R&B song

Lost Without U

Robin Thicke

#1 song in the UK

Walk This Way

Sugababes vs. Girls Aloud

#1 song

Glamorous

Fergie featuring Ludacris

The #1 Movie
At the box office on March 21, 2007

300

Directed by Zack Snyder

Notable March 21 Birthdays
Born in the 2000s

Jace Norman

Actor

Born March 21, 2000