Bob Newhart
George Carlin
Rodney Dangerfield
Newhart had the straight man down pat and w/ his 'phone calls' didn't even need a clown on the other end of the jokes. Carlin was a true master. Rodney just made me laugh.
There's a lot of other guys (and a gal or 2) that are and were funny, but those were my top 3. (Steven Wright, Rita Rudner, Dennis Miller, Jay Leno, Bill Cosby, Alan Sherman, Mitch Hedberg, Robert Lee, John Panette, Carl Hurley, Chonda Pierce, James P Connolly are just a few others that are hilarious.)