Michael Gray mentioned it in his writeup of the Premonition live raid at BlizzCon 2009, but this is a moment so epic it's worth mentioning again, and now that there's video online, you can see it: in the final fight, none other than Hogger appeared to take on one of the best guilds in the game. And this was no mere Hogger, nor even the slightly-more-powerful Memory of Hogger seen in the Trial of Champions. No no -- this thing was a foul raid boss from the bowls of Deepholm, a one-shotting maniac that couldn't be controlled even by the best tank. As you can see in the video above, he charges like an angry Rhino -- he was originally pulled by a Hunter who was then one-shot so fast the aggro table cleared and Hogger reset instantly. And after the raid changed their collective pants, they took him on again, and it was all over but the Gnoll snickering.
He was immune to taunt, and he appeared to just pick a target at random, pinging around the raid like Batman beating up bad guys in his recent videogame. He only had about 600 hit points (some say 666, which would make sense), but he was immune to damage, or at least all forms of damage that Premonition tried to throw at him. In the end, even though they'd beaten Thaddius, Anub'Rekhan, and Patchwerk all at once, this level 80 Heroic version of Hogger was the one who wiped them. I saw Ozzy do War Pigs, but this Hogger fight was probably the most epic thing I saw in Anaheim last weekend.