Ken Lynch, mining engineer Vanderburg in TOS Devil in the Dark, played boxing manager Shoemaker in the Peter Gunn episode, Hot Money.
William Schallert, Nilz Barris in TOS The Trouble With Tribbles, played a Chinese guy (!) Chee Yan in the* Have Gun Will Travel *episode, Lady of the Fifth Moon.
Joseph “Galt” Ruskin as “Dr Jonas Wisner” in the ***St Elsewhere ***episode “Remembrance of Things Past.”
Alfre “Lily” Woodard again as Dr Roxanne Turner on St Elsewhere.
Jerry “Redshirt Rizzo” Ayres as “Captain Warren” in the ***Hogan’s Heroes *** episode “The Flame Grows Higher.”
John “Commissioner Ferris” Crawford as a German officer in Hogan’s Heroes’ “Request Permission to Escape.”
TNG’s Stanley “Kosinski” Kamel as “FBI Agent Ramsey” in the ***HSB ***episode “The Russians Are Coming.”
Theodore “Sergey Rozhdenko” Bikel, Samantha “Marie Picard” Eggar, and Kenneth “Colyus” Mars in the ***Columbo ***episode “The Bye-Bye Sky High IQ Murder Case.”
Haven’t read the whole threat, so forgive me if this is old news, but I recently watched Pretty Maids All in a Row, which has James Doohan, William Grady (Trelane, Koloth), is written and produced by Gene Roddenberry and has his daughter in it. So, yeah.
I think you mean William Campbell.
For my part, I see I inadvertently inserted a “d” into Rozhenko. Mea culpa! 
Brenda “Rashella” Strong as “Nadine Aurora” in the St Elsewhere episode"The Naked and the Dead."
Leonard Nimoy as a whiskey swilling Indian on Wagon Train, The Maggie Hamilton Story.
Susan Oliver, the Orion slave girl in TOS The Menagerie, was in the same Wagon Train episode.
facepalm Yeah, sorry.
Lawrence “Stonn” Montaigne as “Haynes (Diversions)” in 1963’s*** The Great Escape.***
Joanne Linville, the Romulan commander who has a thing for Spock in* The Enterprise Incident*, played Professor Pat Read in* The Invaders, The Pit* episode. Her IMDB photo is from her Star Trek role, with ears. ^:dubious:^
William Campbell, Koloth and Treylane in TOS, played Jeff Jimson in the Kirk Douglas 1955 film, Man Without a Star. I’ve not seen it all yet, but he appears to be the same dastardly bastard that Koloth and Treylane were.
Michael “Kang” Ansara as a palace guard in Bing Crosby and Bob Hope’s ***The Road to Bali ***(1952).
Linda “Gul Ocett” Thorson (aka “Tara King”) as “Mrs Cochrane” (an astronaut’s wife) in three episodes of*** St Elsewhere*** (1985).
Mariette “Zarabeth” Hartley as “Veronica” (the murderer’s secretary) in the ***Columbo ***episode “Try and Catch Me.”
William Schallert, Nilz Baris in The Trouble With Tribbles, played Miles van Vader in the Wagon Train episode, The Amos Gibbon Story.
Anthony Caruso, Boss Oxmyx in A Piece of the Action, played Inidan Gray Hawk in the Rawhide episode, Reunion.
Walter Pidgeon, who played Dr. Morbius in what some call the Star Trek pilot, The Forbidden Planet, plays general Augustus Perry in this Rawhide episode.