I remember that. The woman in the car with Napoleon Solo (Ruta Lee, I think) looks at the license plate and says “Oooooooooh, JB!”
Don’t forget Warren Cooledge, a basketball player on The White Knight who later was an orderly on St. Elsewhere.
And on The Mary Tyler Moore Show as well, although it was during a blackout so you never actually saw him.
Er, the earlier show was The White Shadow.
Niles and Daphne from Frasier appeared at the end of an episode of Caroline in the City.
The ones I can think of that have “appeared” on The Simpsons (with the live-action actors doing the characters’ voices): Fox Mulder and Dana Scully from The X-Files, and Jack Bauer and Chloe O’Brian from 24. Werner Klemperer “sort of” appeared as Colonel Klink, but he “wasn’t really there.” Also, if animated characters count, Jay Sherman from The Critic, and Hank Hill (plus a few others in the background) from* King of the Hill*. (Well, and Rick & Morty, and Fred, Wilma, and Pebbles Flintstone, if you want to include the show’s couch openings.)
Speaking of St. Elsewhere, there were a couple of “sort of” appearances:
Betty White played, IIRC, a Navy admiral, and a character with amnesia who thought he was Mary Richards from The Mary Tyler Moore Show called her “Sue Ann.”
Tim Van Patten played a one-off character, and Warren Coolidge thought he was his high school basketball teammate “Salami.”
Leonard Nimoy appears to Sheldon as Spock (voice and action figure) on The Big Bang Theory.
Also Katee Sackhoff appears as Starbuck and George Takei as Sulu (sort of) in one of Howard’s fantasy sequences.
I don’t recall Bert and Ernie appearing on the Muppet Show.
Four actors who were doctors on St. Elsewhere played patients who were also doctors on an episode of Scrubs. They were never named so you can hand wave they were all the same characters.
Also characters from Scrubs appeared on Cougar Town.
Barbara Bain appeared on Diagnosis: Murder as her character from Mission: Impossible, Cinnamon Carter. Mike Connors appeared in another episode of Diagnosis: Murder as Joe Mannix.
Paul Reubens appeared as Pee Wee Herman on “Comedy Bang! Bang!” in 2013, SNL in 2011 and WWE Raw (wrestling) in 2010.
Didn’t some of the St. Elsewhere docs (aside from the aforementioned Alfre Woodard character also turn up on Homicide? And Scrubs for that matter? (or has that been covered?)
This is a great one. I thought it was hilarious that sad sack Ted was spooked by Jules and her Dad, who had both played mean doctors on Scrubs. But I was also somewhat bummed that after he’d been given a happy ending with the love of his life at the end of Scrubs, he was shown on Cougar Town to be single again and miserable.
Guess performers on two occasions.
My brother told of one scene wherein the live cast had to dispose of a whole load of old books and newspapers and one suggested they sell them. One asked who would buy that many old newspapers and then one of them (I think it was David) shouted “Easy Reader!”
Roy Thinnes played “Architect David Vincent” on "The Invaders (in color)"in the late sixties. He reprised the character in the 1995 mini-series of the same name, basically just a cameo>
Robert Knepper played Theodore “T-Bag” Bagwell on “Prison Break”. Then did it again on “Breakout Kings”.
Miles Drentell from thirtysomething later showed up as the same character on Once and Again.
Cosmo Kramer (of Seinfeld) appeared in an episode of Mad About You. Kramer’s apartment across the hall from Jerry was actually Paul’s bachelor pad from before he married Jaime. Kramer was subletting from Paul, as the latter couldn’t bear to give up his old good-times space once and for all. Kramer persuaded him to let it go. (Or something like that.)
Whoops, just noticed that the Scrubs appearance of the St. Elsewhere characters was mentioned upthread from my post.
Interesting. In an episode of Seinfeld, George and Susan were watching Mad about You in bed one night (much to George’s chagrin).
I didn’t either, but here it is: https://www.youtube.com/watch?v=np_aQ6a-Zis
Several of these last ones seem to be shows that were running at the same time.