The Hulk's Top Ten Battles

#3 Hulk vs. Hulk, er, Maestro (Hulk: Future Imperfect #1 and 2):

When the Hulk met Maestro, the smashing was very great. You see, Maestro is the Hulk of a future where he's gone bad and lain waste to all of the other super-powered beings and installed himself as ruler. Though they would later come into conflict in a plot that involved the Destroyer, the first throw-down is the best of most significant (thanks in no small part to the creative team of Peter David and George Perez).