Not so much with regards to cRPG, but since I play a lot of online games with uni friends under my name, I often get called Tenne instead of my real name when I'm out, nine times out of 10 I don't bat an eyelid about it either however other people find it odd. (For this reason alone I try my best to call them by their real names while on teamspeak)
I'm sure that happens to a lot of you who play with mates you see in real life too.
Otherwise a recurring joke with a close friend refers to wishing I had admin powers in real life, to ban chavs etc.