Favorite guest appearance on a sitcom?

The fabulous Harriet Sansom Harris of "Memento" and "Phantom Thread" as Bebe Glazer.

 

Renie Santonie. Poppie is doing very well, verry well.

 

Roy Clark-The Odd Couple

 

One of my favorite “I Love Lucy” episodes of all time- William Holden appears as himself at the Brown Derby and Lucy later disguises herself with a fake nose so he doesn’t recognize her. She ends up setting it on fire. I couldn’t find a proper clip with Holden but this one is part of the episode.

 

This one also ranks among my favorite guest appearances: Burt Reynolds on “The Golden Girls” -

 

Not even much of a Liam Neeson fan, but I was pleasantly surprised when he showed up on The Orville:

 

Carol Kane, Cheers

 

Carl Reiner/Mel Brooks/Sid Ceasar-Mad About You
Tom Selleck-Friends
Leslie Jordan-Will & Grace
Jean Stapleton-Grace Under Fire
Bebe Neuarth-Frasier
Jean Smart-Frasier
Laura Linney-Frasier

 

Possibly my favorite quote of The Orville's first season came from guest star Robert Picardo (as Alara's father):

 

I thought it was fun to have David Faustino on Modern Family. I can't have been alone in waiting for the scene with Ed O'Neill, only for there to never be one.

 

one of my favorites Michael Rennie on Lost In Space...The Keeper...

 

Vincent Price on "The Brady Bunch" (or pretty much anything else he appeared in):

 

Bob Dylan
1) Dharma & Greg
2) Pawn Stars
3) Jimmy Fallon at the Big Apple Circus

 

Tierney also was the voice of store detective Don Brodka at Try 'n' Save on the Simpsons. He apprehends Bart attempting to shoplift a video game called "Bonestorm." His character is exactly what you would expect from Tierney voicing a store security boss.

 

Leo Durocher on The Munsters when Herman had a tryout with the Dodgers.

 

I prefer Tom Hank's guest appearance on Happy Days. The karate scene where he fights the Fonz is absolutely hilarious. Hanks' "I'm a psychiatrist" quote at the end is great comedy!

 

Emma Thompson as Nanny G on Cheers "555-6792" One of the best scenes

 

Orlando Bloom's one-off in 'Extras'.

 

They were going to cast Divine as Peg's mother, but Milstead died before they could film it.

 

Vincent Price did the show intro and segues to the various skits on the Canadian kids' show "Hilarious House of Frightenstein". HHOF was a brilliant show from 1971 and was instrumental in shaping my love for rock music.

Hilarious House of Frightenstein deserves it's own thread.

 

Extras is cheating a little bit, there were so many great cameos, I'm surprised David Bowie hasn't been mentioned though...

https://www.facebook.com/video.php?v=1235790066437854

 

Tom Hanks vs Fonz

 

Tom Hanks slaps Alex P. Keaton

 

No, I don't think so. The example's in the spirit of the thread.

 

Derek Nimmo; played similar characters in both 'Oh Brother!' and 'All Gas And Gaiters'. He once made an appearance in both shows as the character he played in the other show. That messed with my head when I was little, that did.