I've seen George Carlin live twice, my comedic role model
Also been lucky enough to catch Gilda Radner, Rita Rudner, Milton Berle, Tim Conway & Harvey Korman, Joan Rivers & Don Rickles (2X together), Bill Cosby, Howie Mandel, Jaimie Foxx, Gallagher (2x), Phyllis Diller (twice, what a riot she is live
) and others I can't think of right now.
I love standup. Have done it a bit myself, both open mic and feature act.