You know, I was just thinking back to the old eps... when the Third fought Orochimaru at the Chuunin exams finals, didn't Orochimaru summon the dead 1st (Senju) and 2nd (Uchiha) Hokages to fight? The 1st looked like himself, but if that was the 2nd, one point is that he wasn't dead to begin with, and he looked nothing like nor had any abilities of Madara... Unless I've missed some detail, that's one giant plot discrepancy.