The Silence of the Lambs barely passes, I think. (Clarice has a roommate named Ardelia, and they aren't always talking about Buffalo Bill.)

As for my favorite movies...well, Lawrence of Arabia doesn't have any women at all, and the others don't qualify for one reason or another. Probably my favorite movie that qualifies is Dancer in the Dark, and that isn't even in the top ten.

Embarrassingly enough, the first other example of a qualifying movie that comes to mind is Mulholland Drive, which certainly has plenty of girl-on-girl action.