Oh damn, I do remember Diana in "V" which was a good sci-fi mini-series. She was hot and sinister in a great way. (I think the male performers on "Ancient Aliens" would love her, if for no other reason to prove some of their theories... LOL!)
How about Cloris Leachman as Nurse Diesel in Mel Brooks' "High Anxiety"? Way to obvious, but way, WAY to funny too.
