Instead of naming the obvious (because its already been done), I'll go with a reg who always delivers funny/razor-sharp posts, but seems to kinda fly under the radar: Unknown Pervert. Plus, his brevity is something to be admired, and in a perfect message board world, it would rub off on some of XPT's editorially-challenged regs.
_________________________
"Bornyo sleeps under a bearskin that he killed and skinned when he was 5. He just stared the thing dead with mind bullets." - Floofin