I guess I'm lucky. I've never had stage fright for as long as I can remember. Being in front of crowds doesn't bother me in the least, which is kinda funny because I'm not very social. Put me in front of a couple hundred people and I'm fine, put me in front of a couple people and I get pretty quiet.

An old pro told me the best way to get over stage fright is to imagine that the people in the audience are all naked. This workes for me.

I dunno about that one. Getting a boner on stage can make you quite self-conscious, although having a guitar slung in front of it helps a lot.