My friends and I went to see Rob Riggle (Step Brothers, The Hangover, The Office) perform at the Hollywood Improv and met him before the show, he was super friendly, shook our hands and talked to us.
After the show I realized Craig Robinson (The Office, Pineapple Express) was sitting at the table behind us. I talked to him briefly after the show, he was also very nice.

I wasn't expecting to meet them, so I didn't have a camera or anything to get signed, but it was a pretty cool night overall {thumb2}