It's Father's Day, and you know what that means: time for a countdown of the worst celebrity dads. Whether it's excessive partying, too many baby mamas, or just plain bad parenting, these guys have shown the world what NOT to do when raising a kid. Check out our list after the jump...

Alec Baldwin - Offense: calling his daughter a rude little pig

- Click pic for next page -

Image © Bob Charlotte / PR Photos