We've combed the Internet to find the stories of celebs who tip a hefty chunk of change, and those who barely tip pocket change at all.

Full List:

Best Tipper #10: Dan Aykroyd

Best Tipper #9: Barack Obama

Best Tipper #8: Bill Murray

Best Tipper #7: Drew Barrymore

Best Tipper #6: Russell Crowe

Best Tipper #5: Drew Carey

Best Tipper #4: Hulk Hogan

Best Tipper #3: Charlie Sheen

Best Tipper #2: David Beckham

Best Tipper #1: Johnny Depp

Worst Tipper # 10: Rachael Ray

Worst Tipper #9: Mick Jagger

Worst Tipper #8: Dwayne 'The Rock' Johnson

Worst Tipper #7: Bill Cosby

Worst Tipper #6: Kirsten Dunst

Worst Tipper #5: Madonna

Worst Tipper #4: Tiger Woods

Worst Tipster #3: Usher

Wosrt Tipper #2: Britney Spears

Worst Tipper #1: Jeremy Piven