Ozzy Osbourne has been confirmed as a presence at BlizzCon 2009. It's not confirmed if the Prince of Darkness will be performing at the famous convention - let's hope so!

Ozzy has been part of a series of adverts for World of Warcraft featuring known celebrities such as Verne Troyer, Mr. T, William Shatner and Jean-Claude Van Damme. Watch Ozzy's advert below.