Comedy people are always present because they're always looking for the funniest version of whatever the line is. Sometimes theater people, where scripts are sacrosanct, aren't quite as present in scenes. That's a massive generalization, but in my experience, I find that comedy people are great to improvise with and to do scenes with because they're there.
Chris O'DowdI play very sweet characters, so people look at me like I'm the kid from 'The Wonder Years,' rather than Brad Pitt.
Chris O'Dowd