Dwayne Kennedy is Frank in The Stranded (Season 3 Episode 10).
Earl Schuman is Izzy Mandelbaum Sr. in The English Patient (Season 8 - Episode 17).
Ellis Williams is Karl, the exterminator in The Doodle (Season 6 Episode 19) and in The Diplomat's Club (Season 6 Episode 21).
Eric Christmas plays Jeffrey Haarwood in The Gum episode (Season 7 Episode 10).
Ernie Sabella is naked fat man in subway in The Subway (Season 3 Episode 13).
Everett Greenbaum is McMaines in The Butter Shave (Season 9 Episode 1).
F. William Parker is the country doctor in The Package (Season 8 Episode 5).
Frank Van Keeken is Vegetable Lasagna in The Butter Shave (Season 9 Episode 1).