I'd never even heard of Katt Williams, so thanks for mentioning him, Jsaad -- and good topic, too

The recently departed George Carlin is my hands-down all-time favorite, and I'm all the more glad I had the chance to see him last November - though I do think a lot of his older stuff was better than what he did live.
As for the still-living comedians...
Not a fan of Robin Williams, IP? I think he's as good as anyone out there - thinks so fast (stimulants or otherwise), he really makes you work to stay with him. And Chris Rock is still right up there.
Always looking for new comic interests, so I'm looking forward to the other responses here. TP for starting, J.
-sw