Diana Muldaur, playing multiple characters in Star Trek.
TNG and TOS star, Diana Muldaur
Star Trek Catching Up With Diana Muldaur, Part 1
Diana Muldaur as Dr. Katherine Pulaski in the second season of "Star Trek: The Next Generation" 1988-89.
Star Trek Women - number 5 and number 27 are both Diana Muldaur, same episode, same character, same hair, same costume, but with a red visor one time. I'm glad they left a few out.
Doctor Ann Mulhall (Diana Muldaur)