I just have to say why a bloody night elf. He should have rerolled horde.
Anyways this is just one of the recent commercials for their popular World of Warcraft games with the catch phrase, "What's your game?".
The other celebrity that was used was William Shatner playing a Tauren Shaman. I don't know, I would have cast him as a Draenai Paladin or something. I mean he was wearing Jedi robes in the commercial. Both commercials can be found here in the World of Warcraft movies download section.
Personally I'm waiting on the next commercial which is supposed to use Verne Troyer the Mini-Me from Austin Powers.
Update 12/18: Mini-Me Commercial is live. Posted here.