Frantz Turner is Salesman in The Jacket (Season 2 Episode 3).
Fred Pinkard is Newstand Boy in The Dinner Party (Season 4 - Episode 13) and Old Man in The Andrea Doria (Season 8 - Episode 10).
French Stewart is the theatre manager in The Opposite (Season 5 Episode 22).
Gene Dynarski is Izzy Mandelbaun Jr. in The English Patient (Season 8 Episode 17).
George C. Simms is Man #2 in The Robbery (Season 1 - Episode 3) and FBI Man in The Baby Shower (Season 2 - Episode 10).
George Murdock is Yuri Testikov in The Marine Biologist (Season 5 Episode 14).
George Wallace is the doctor in the final scene of The Checks (Season 8 Episodes 7).
Gordon Jump is Mr. Thomassoulo in The Butter Shave (Season 9 Episode 1) and in The Voice (Season 9 Episode 2).
Gregory T. Daniels is Man on Corvette in The Parking Garage (Season 3 Episode 6).
Harris Shore is the first Mr. Lippman, Elaine's boss at Pendant Publishing, in The Library (Season 3 - Episode 5).