A great deal. Here's the list of notable guest stars:
Antony Alda- (Alan Alda's brother) ("Lend a Hand" 8.20)
Robert Alda- (Alan Alda's father) ("The Consultant" 3.17 and "Lend a Hand" 8.20)
Ned Beatty- ("Dear Peggy 4.10)
Ed Begley Jr.- ("Too Many Cooks" 8.01)
James Cromwell- ("Last Laugh" 6.03)
Laurence Fishburne- ("The Tooth Shall Set You Free" 10.14)
Ron Howard- ("Sometimes You Hear the Bullet" 1.17)
Harry Morgan- ("The General Flipped at Dawn")
Pat Morita- ("Deal Me Out" 2.13 and "The Chosen People" 2.19)
Leslie Nielsen- ("The Ringbanger" 1.16)
Patrick Swayze- ("Blood Brothers" 9.18)
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Wayne Rogers starred in MASH for three seasons.
There is no listing or evidence that Arlene ever appeared on the show.
Most of the cast are still acting, although many have passed on and most of them are in there 80s and 90s, they still are remembered and recognized for their work in Mash.
11 yrs
25400 mash
There were 11 seasons of MASH.
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5 episodes of Christmas mash
The cast of Bangers and Mash - 1988 includes: Jonathan Kydd as Narrator (1988)
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The cast of Moving Guests - 1926 includes: Al Alt
The cast of Helm El Mash-had - 2014 includes: Lilit Fahmy as Lilit Fahmy
The cast of I.K.U. - 2000 includes: Mash as Mash Akechi Denki as Akechi Zachery Nataf as Dizzy
The cast of For Guests Only - 1923 includes: James Parrott Jobyna Ralston
The cast of Guests of Honour - 1945 includes: Gordon Burwash Austin Willis
Wayne Rogers starred in MASH for three seasons.