After seeing Clint Eastwood on Mister Ed, I got to wondering who else has guest starred on other programs, as themselves.
Who else has there been?

1. Lots of them on I Love Lucy: John Wayne, Van Johnson, Harpo Marx, William Holden, and others.
2. Billy Crystal and Robin Williams appeared at Central Perk in the opening of a Friends episode.
3. The Big Bang Theory had tons of sci-fi/fantasy stars show up: Will Wheaton, Mark Hamill, William Shatner, Carrie Fisher, LeVar Burton, George Takei, etc...
4. Flatt & Scruggs on The Beverly Hillbillies
5. Sammy Davis Jr. on I Dream of Jeannie and All in the Family.

How about Davy Jones on the Brady Bunch and Sabrina the teenage witch

Tommy Boyce and Bobby Hart on I Dream of Jeannie and Bewitched also

Alice Cooper...too many to list

Boy George .....the A Team

Vanna White.... has made a number of appearances as self

Leo Durocher .....Mr Ed and Beverly Hillbillies

Alan Trammell .....Magnum PI

Terry Bradshaw..... Married with Children

O.J. Simpson ...Here's Lucy

Reggie Jackson.....Archie Bunker's Place

Alan Trammell .....Magnum PI

Lou Whitaker was in that episode, too.

Sparky Anderson was on WKRP as himself.

Robert Goulet periodically appeared on Mr. Belvedere as himself.

Leo Durocher also appeared as himself on The Munsters

Bob Uecker...Mr Belvedere and Who's the Boss?

Jerry Quarry and Art Linkletter in the Batman Series

Johnny Carson appeared as himself on Cheers, Newhart, and the Mary Tyler Moore show

And do we give Adam West credit for his "Family Guy" schtick?

Lots of celebrities had cameos on The Simpsons, Family Guy, and I believe even King of The Hill, but those seem kinda stretching the spirit of the idea, but West famously had a regular bit on Family Guy