Favorite guest appearance on a sitcom?

Always in conjunction with Denver Pyle. ("More power to ya!")

 

Robin Williams and Billy Crystal showing up on Friends. They get the best cameos.

 

Brian Eno on Father Ted

 

Not a sitcom but it is hard to beat George Harrison on SNL

 

How about this?

The Manhattan Transfer on Home Improvement

the manhattan transfer home improvement - Bing video

 

Steven Weber on Party Down.

 

And anytime Uncle Arthur appeared on Bewitched the show went up rungs.

 

Katie Sackhoff and George Takei on Big Bang Theory

 

Its Garry Shandlings Show. S04 - Ep08 The Day Howard Moved In HD Watch - Dailymotion Video

Howard Sprague on Garry Shandling.

 

Ken Osmond on Happy Days

 

Christopher Lloyd on Spin City



Michael Gross also appeared in Michael's last episode.

 

As a big fan of Sanford & Son, I was sad to hear of the recent passing of actor Charles Weldon, who guest-starred on the show in addition to playing many different roles both on the big screen and the small screen. He was also a founding member of the doo-wop group The Paradons and in his later years, had returned to performing music in addition to theater.
RIP Charles "Chuck" Weldon of The Paradons

Charles Weldon's memorable appearance as Alex Hacker/Ms. Wallace on "Sanford & Son"

 

BB King on Sanford & Son tops my list...

The producers gave BB 10 mins...

5 performing in a blues club & 5 hangin out with Fred @ home

#2 would be the beautiful & sexy (still) Raquel Welch on Mork & Mindy..

#3 Dylan on Dharma & Greg...Dylans facial expressions while Dharma was explaining how music should sound was hilarious

Hard to top these 3 IMO

Honorable mention : Tip O'Neil on Cheers

 

The Beach Boys on Home Improvement

I could post a video, but all that was found were low quality ones.

 

William Frawley’s last television appearance with Lucille Ball.

 

I remember the Doobie Brothers showing up on What's Happening? when I was a kid...
Howard Cosell on The Odd Couple (I think it's the second appearance when he goes easy on Oscar and Oscar, expecting the Full Cosell, starts throwing insults around).
Gary Oldman on Friends (a guy I wish would do more comedy...)

 

Sam Kinison- Married With Children

 

I love that!

 

CLASSIC!!!

 

The oddest window cameo was Col. Klink. Not only was he a character from a show on another network (Hogan's Heroes) but he was from WWII, long before the time of Batman.

 

Many favorites, but the first one that sprang to mind is Wil Wheaton's recurring role on The Big Bang Theory.

 

Roger Daltrey on Rude Awakening

He made 5 appearances on the show.

 

Can't argue that the best may be the previously-mentioned Sammy Davis, Jr. on All in the Family. But the first one to come to mind and one of my favorites was from Cheers, not mentioned prior on this thread: George "Spanky" McFarland of Our Gang.



Doug

 

Chrissy Hynde on Friends learning "Smelly Cat".