FU, used the name Oberyn on cRPG before GOT ever came on the air /hispter/nerd. And even then minor character.
I agree completely. I myself naturally tend to go away from mainstream culture.
My personal favourite is still GOT names. I've seen like 5 Robbs in cRPG. I don't even count the jaime lanisters anymore.
Anyway I think I found a good balance with Kafein. It's short, easy to remember, to spell and to pronounce for most people I play with, and I have yet to find any website/service where it is used by someone else.