One of the things that cracks me up the most about Simon Pegg is when he said, via tweet, that he was on hold with the bank, and his daughter walked in the room and he said, "Hello, fart face!" just as the person from the bank picked up. I don't know why that was so hilarious for me, except I call my kids and husband fart face, too, and I can totally see that happening to me.
Also his movies are the shit.