DeForest Kelley, James Doohan, Leonard Nimoy and Walter Koenig in four episodes of
THE VIRGINIAN aka The Men From Shiloh
Duel At Shiloh (1963) The Man Who Couldn't Die (1963)
Show Me A Hero (1965) Crooked Corner (1970)
"Duel At Shiloh" (Season 1, Episode 14) DeForest Kelley plays a mean cowboy from Texas, who uses his fists but keeps his shirt buttoned up. He shows up quite late and turns out to be really nasty.
"The Man Who Couldn't Die" (Season 1, Episode 19) James Doohan has only a small role and appears twice at the beginning.
"Show Me A Hero" (Season 4, Episode 9) Some settlers (Leonard Nimoy et al.) are being blackmailed and terrorized by their new neighbors.
"Crooked Corner" (Season 9, Episode 7) Walter Koenig plays a German settler and speaks with a ridiculous accent.