I've gotten Gillian Anderson, Nicole Kidman and Annette Benning, who is a good 15 years older than I!!! I do look a bit like a younger version of her, I think. Someone else thought I looked like the redhead on Desperate Housewives!
One X-Files fan came up to me at a mall and started asking me all sorts of strange questions, as if I knew what the heck she meant--I've never seen the X-Files before, except for one episode that I hated. I hated to tell her I wasn't Gillian Anderson, though. Eventually she left, after a very uncomfortable minute.