I actually have 2 of them. Jim Gaffigan, and Jeff Dunham. I've seen both of them perform and I laughed the entire night. Plus not to mention there TV tapings
I have recently discovered Jo Koy and have become a HUGE fan of him. Look him up on youtube Jo Koy - Don't Make Him Angry. This guy is a scream!
I have to say some of the funniest thing's I've ever laughed at have came from Mr. Robin Williams. Check him out on Who's Line is it Anyways? a few years ago!