rob corddry...

You probably don't know his name, but he's a comedic actor who's been in "What Happens in Vegas" and "The Heartbreak Kid." He played the sidekick to Ashton Kutcher in the Vegas film and Ben Stiller's best friend in the remake of the original Charles Grodin vehicle.

I first became aware of Corddry when he was featured in an episode of "Curb Your Enthusiasm" as Larry's friend the sex offender.