3rd Rock from the Sun (1996)

Season 5: Episode 5

When Mary and Nina talk about how good looking Harrison Ford is, Dick decides that he himself is hideous and visits a plastic surgeon to discuss having his face surgically altered. However, when the surgeon tells Sally that she might benefit from having some plastic surgery herself, she becomes paranoid and believes herself not to be good enough for Don. Harry, meanwhile, is chuffed when the surgeon tells him that his face is perfect.