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

Know Your Enemy by Green Day

#1 alternative hit

Know Your Enemy

Green Day

It Happens by Sugarland

#1 country song

It Happens

Sugarland

Blame It by Jamie Foxx featuring T-Pain

#1 R&B song

Blame It

Jamie Foxx featuring T-Pain

Boom Boom Pow by The Black Eyed Peas

#1 song in the UK

Boom Boom Pow

The Black Eyed Peas

Boom Boom Pow by The Black Eyed Peas

#1 song

Boom Boom Pow

The Black Eyed Peas

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

Terminator Salvation

Terminator Salvation

Directed by McG