I was watching "Wilton the Kid" when Sterling Holloway showed up and made me wonder who else from Gilligan's Island guest starred.

Les Brown Jr. as Lt. Mark Harrison
Zsa Zsa Gabor as Marika
Mike Mazurki as Geronimo
Don Rickles as Bald Eagle
Bartlett Robinson as Colonel Griswald
and the biggest: Larry Storch as Cpl. Randolph Agarn

I'm trusting IMDb for a couple of entries.

I enjoy tv show trivia like that, it makes the shows more interesting.