I haven't ever felt a woman was creepy. Creepy essentially translates to unwanted (perceived) sexual advances, and, now I'm going to sound super-creepy myself, but I've never /not/ wanted a woman to come on to me. Like, obviously I don't think about it all the time, but it's always a welcome surprise if it happens. I don't have any exceedingly unattractive female acquaintances though.

I would imagine this would be different if I was straight. An example of creepy female-female interaction would be the way Amy often acts towards Penny on TBBT.