I thought the character of Vincent was ok, up until the scene where Michael turns over power to him. You could tell FFC was trying to draw a parallel between the scene where Vito passes the power onto Michael, and in one of the only times in FFC's career, he failed miserably. What really urked the hell out of me in that scene is that Vincent immediately sits down, and both Neri and Calo and the other dude, whoever the hell that was, automatically go over and kiss Vincent on the hand and say "Don Corleone." Mike had been Don for at least 45 minutes before the first film ended, and after killing off the heads of the Five Families, Moe Greene, and avenging Santino's death by having his own brother-in-law killed, then, AND ONLY THEN, is Michael referred to as Don Corleone. So after the passing of power from Mike to Vincent, I started to loathe him.