The Death Knight has been touted as the first heroic class in World of Warcraft. Hopefully there will be more to come in the future. We've heard some interesting tidbits about this class, and many people are chomping at the bit to play one. Aegulle of Cenarius wants to know what it is about Death Knights that makes them "heroic." To him they appear to be just another class.
Some suggested that the starting level of this class makes them heroic- that nothing more thank skipping 55 levels of grinding is enough to qualify for an elevated status. Unlike existing classes, a player must put some effort into WoW before it can even be rolled. Death Knights can only be created by those who "unlock" the class by leveling at least one character on the server to 55.