When I was thinner, younger and had just had quite a severe haircut I looked like Bridget Fonda in Single White Female - apparently.
And a long term friend of mine swears (again when I'm thinner) that at the right angle I'm a dead ringer for Helen Hunt. Maybe she has one of those faces
Anyway he complained I ruined What Women Want for him, because the camera kept catching her just right and making him think - ooh, SG!
I have been compared to Phoebe for being "random" (actually I was being funny, but hey) and Daisy Steiner from Spaced for similar reasons.
The most oddest comparison I can remember was when a friend watched Pulp Fiction and told the rest of our group that Uma Thurman's character really reminded her of me. To the extent it was the first thing she said when her boyfriend asked her what she thought of the film. Never quite worked out why, but I liked it.