Can't agree more! I saw him live a couple years ago and I was surprised walking out of there saying that it was by far the best standup show I've ever seen. I laughed so hard I was sweating and my sides were cramping so bad I was getting a headache and I hurt all over.
I've seen Chappelle, Carlin, Rock, Patrice O'Neal, Chris Robinson... and a bunch of others and Chappelle was right up there too... but I laughed the hardest at the Louis C.K. show.
His FX show is awesomeness.