Actors you imagine are douchebags IRL

Everyone knows there are actors out there who can readily be identified as difficult pre madonnas from rumors and stories, but I'm interested in speculation- which actors do you think would be total jerks in real life?

I've been watching blooper reals form The Office and everyone involving John Krasinski is kind of weird, he breaks a lot and seems to get peeved at the other actors for making him laugh. Also when he does the commentary on the dvds and from every interview I've seen with him he comes across as a total pretentious douche.

Jason Bateman has always struck me as a guy who would be a real knob. Maybe it's just his extremely punchable face, but I wouldn't be surprised to learn that he is reviled by people who have worked with.

Ricky Gervais- I love pretty much everything this guy has done, but I imagine he is an egotistical jerk. He comes across as kind of an egotistical jerk whenever he is not "in character."

Jennifer Aniston- I would be willing to bet she is one extremely stuck up bitch, she just has that face.