If I were in Las Vegas this weekend, I'd go see Shecky Greene performing at the Suncoast. I've never seen the man in his natural habitat (a Vegas showroom) but my father used to come back from every Vegas trip, raving and giggling over Mr. Greene's onstage antics.
This is the first time in quite a while that Shecky's done what he reportedly does so well. I hope he does it some more and I hope I get to go see him. Here's an article about the guy.