Himself is a great performance.
Bill Cosby often said that today's comedians rely on cursing too much, like a comedy crutch. Take away some comedians' swear words and they're left naked. Sometimes I'll be watching a comedian and think of Bill's complaint. Katt Williams comes to mind. I agree with Bill - it takes real talent/skill to be funny without cursing.
I got Eddie Murphy's two LPs in the early 80s, when I was in high school, and they are awesome.
I'd agree with Mark Twain as a top humorist. Also, I want to add Weird Al Yankovic to my list. He always delivers.
Who do you think is the worst comedian? My least favorite comedian is Dane Cook.