Having an opportunity to play different characters, and work in different mediums, that's what's fun. The worst question you could be asked is, "What do you like better, film, television or theater?"
I don't know how to play myself. I'm not interested enough in myself. That's just not how I was educated. That's not how I learned to become an actor. Acting is creating a character.
It's sort of cliche, but when you're playing drunk, your character is trying to appear sober.
I'm an actor, in particular, that likes to have a mask or something that can help me distance myself from the character. Like the moustache or an accent.