Jonah Hill

'Funny People' is my favorite performance of myself to date. Even though it's a comedy and there are serious moments, I really felt like Leo felt like a real person. It didn't feel like I was playing myself. Whether it's a comedy or drama, I just try to make it as realistic as possible.

'Allen Gregory' came about because we wanted an animated show and we were just tossing around some ideas about me playing a 7-year-old. We thought that would be cool, because we couldn't do that in real life.

When I have a creative insight, there is a high. I think back in the day, I made music as much as I did because it made me feel so good. I think you could argue that there is a creative addiction - but, you know, the healthy kind.