In what was probably the most absurd guest star ever, Joe Piscopo on ST:TNG.*
There was also James Doohan, DeForest Kelly, and Leonard Nimoy on ST:TNG.
Hans Conreid on one the better episodes of Lost in Space. Michael J. Pollard was also memorable as a guest on the show; Pollard also appeared on the original Star Trek’s “Miri.”
*Data wanted to learn how to be funny, so he had the holodeck manufacture a famous comedian. And of all the great comics in all of history, the one he chose was Joe Piscopo. :rolleyes:
I hope I didn’t inadvertently suggest that these all need to be sci-fi. I’m open to any good suggestions, and y’all have been giving great ones. Keep 'em coming!
Danny Thomas as the alien on The Dick Van Dyke Show (which was a Danny Thomas Production).
I think he just wanted a way to be a Guest Star without being Danny Thomas.
I’m all about David Warner in sci-fi/fantasy. The man was Jack the Ripper, Sark and Satan (sorry - “Evil Genius”), fercryinoutloud. And apparently he’s going to be in a Doctor Who episode. Wahey!
Thereby proving that David Warner is the ultimate bad guy. When you get to be in a movie with the guy who was Alex de Large and you get to be the bad guy?
If I recall correctly, Rod Serling also narrated The Undersea World of Jacques Cousteau from time to time. Hardly a “guest star” role like the others listed, but I always found it interesting.