On 'Heroes' I got to work with Greg Grunberg all the time and Masi Oka, and they both are just wonderful actors. I don't know - you learn so much by watching people like that, I guess.
'The Invisibles' by Grant Morrison is my favorite series of all time.
There's something really amazing about watching an actor like Michael C. Hall or Jennifer Carpenter, who are completely professional and do everything so brilliantly, but yet can have a really great time on set.