Rick Hall is Vet in The Andrea Doria (Season 8 Episode 10) and in The Merv Griffin Show (Season 9 Episode 6).
Rick Overton is The Drake in The Handicap Spot (Season 4 Episode 22) and in The Pilot (Season 4 Episode 23).
Robert Hooks is Joe Temple in The Couch (Season 6 Episode 5) and in The Diplomat's club (Season 6 Episode 22).
Roger Eschbacher is Man with Cane in The Dinner Party (Season 5 - Episode 13).
Sam Lloyd is Ricky in The Cigar Store Indian (Season 5 Episode 10) and in The Pie (Season 5 Episode 15).
Samuel Bliss Cooper is Daryl Nelson in The Wizard (Season 9 - Episode 15).
Sandy Baron is Jack Klompus in 6 episodes. The first The Pen (Season 3 Episode 3).
Sandy Ward is Pop Lazzari in The Gum (Season 7 Episode 10) and in The Bottle Deposit (Season 7 Episodes 21-22).