Not really a stalker (she'll probably come and berate me now), but when I joined I wanted to be Trillian. That name had been used, on one single thread, 3 years earlier, and never since. So I couldn't use it, but I didn't think anyone would be using it.
Anyway, she is apparently a serial namechanger who has been here the whole time and pops up occassionally to tell me off for daring to suggest that it is confusing for her to use Trillian when she has plenty of other names to use that would not have her be mistaken for someone else.