Will Smith punched Charlize Theron in the face when they first worked together. The actor was preparing to portray legendary boxer Muhammad Ali when he starred alongside the blonde beauty in 2000's "The Legend of Bagger Vance" - and got carried away showing off his fighting skills.

Charlize said: "The first time I worked with him he punched me in the face. He was training for 'Ali.' I encouraged him to show me a couple of moves. I was completely knocked out!"

Tom Hanks hired a "Baywatch" extra to teach him how to swim. The "Angels and Demons" star took lessons to improve his stroke after discovering he would have to don a pair of tight swimming trunks for his latest film role.

He said: "I hired a Los Angeles lifeguard, a guy who actually had appeared on 'Baywatch,' for God's sake! I thought I knew how to swim. go into the pool, go back and forth. But I quickly learned I didn't know how to swim at all - at least not according to my coach!"

Charlize Theron thinks Tom Hanks has a sexy butt. The Oscar-winning actress - who was directed by Tom in her breakthrough movie "That Thing You Do!" in 1996 - is impressed with the 52-year-old star's behind and can't stop gushing about it.

She said: "He has a really good a*s. A really, really good butt."