What I really love, is finding a script and fantasizing and going to a different world and kind of portraying a character that is interesting. Because other lives interest us, that's why we read magazines like People and try and fascinate and drool over what other people are doing.
When you play a character it's the persona you bring across from a book to film, or book to script to film. If I play Frank Sinatra, there's gonna be things I do in a movie that Frank might not have done, but it's the personality that comes across.
I never think about the next movie. I always think about the situation I'm in now, but you do think about an arc someone can go. I love Johnny Depp, I love "Pirates of the Caribbean", but I never wanted to play the same character over and over again.