Leeroy Jenkins" Schulz at BlizzCon (filmed by none other than the Joystiq network's own Conrad Quilty-Harper-- man, all my favorite bloggers were at BlizzCon, and somehow I didn't meet a single one of them). There's not much here, but just in case you didn't get to see him do the yell (twice!) at the sound-a-like contest, here it is in all its glory. I feel bad for the poor guy, who must get asked to do that yell all the time-- he's not your monkey, people!
But he does (mostly) maintain that the video itself is real, and personally, I don't believe it. Yes, maybe it was a reenactment of a previous mishap, but Pals For Life members have mostly admitted that the movie itself (with the calculations and a Paladin trying to get cloth shoulders) was staged. Hilariously staged, I'll admit, but for Schulz to walk around talking like he really did just "have chicken," is misleading at least.
Yeah it's just a funny movie, but you, as a WoW Insider reader, might as well know the truth. Still, I like Ben-- he seems like a good enough guy. Yell on, Leeroy!