I think he's much funnier in many ways than some of the things that I've done. Because it's a little bit more layered. He's constantly trying to teach Luke what he thinks are really deep philosophical ideas, but they're really simple.
I thought it would be a lot of fun and I wasn't going to do the movie without Johnny. The studio suggested a couple people, and I'd never met Johnny, but I thought we'd be a perfect team for this movie because we're both a little bit unpredictable.