One of my favs is Dana Carvey. I love when he comes on the late night shows, but the problem with him is that he uses the same stuff a lot. I also like will ferrell (on the late night shows) and steven wright. And Buddy Hackman is rising. "Tuesdays with Buddy" on Kilborn is awesome.
David Cross is hysterical. He does a great crack baby impersonation. ("I didnt say it was a funny impersonation") Too bad the show fell apart. My wife got sick just beforehand and we missed it....I really wanted to go. Jay Mohr....funny when he guests on Jim Rome, horrible on his own show.
All Time- Bill Hicks and Robin Harris. Current- Sarah Silverman (my future wife or stalking victim) Dave Chapelle Joe Rogan