1a A unique name, however it is a common misconception that Serge is a name for some French or Canadian bastard that fags around.
1b It is also always assumed that it is short for Sergio or pronounced sir-gay. This is not always the case as Serge can be pronounced surge(like a power surge) and can also be a name given to someone Russian or even Irish in some cases.
2 The name of the main character from the popular Playstation 1 game Chrono Cross.
1a Guy: What? Who told you that Serge was French?!?! He's Irish dude!
1b Girl 1: Hey have ya met the new transfer student "sir-gay?"
Girl 2: Yeah I talked to him but, he said it was pronounced "surge."
2 Guy: Yeah man, I just got the rainbow swallow for Serge, it kicks ass dude.