10 Actors Who Had To Get Drunk To Shoot Their Movies
4. Billy Bob Thornton - Bad Santa (2003)

Despite its vulgar content (or perhaps because of it), Bad Santa has become a Christmas favorite. In the movie, Billy Bob Thornton plays an alcoholic department store Santa named Willie, who robs the stores that he works at.
Thornton's Willie is responsible for numerous hysterical drunken antics, including many that are only featured in the unrated "Badder" Santa DVD version. Thornton has been honest about often actually being drunk during filming, which might explain why he's been pushing for a Bad Santa sequel.
Wouldn't you want another chance at a job in which being drunk only made you better at it, too? Yes, please.