GFI - Tough. Very tough. A case can be made for several like Brando, Pacino, Duvall and Caan.

GFII - Of course Pacino once again gave a stellar performance. But for me it's a toss up between Gazzo (Pentangelli), DeNiro (Vito) and Casale (Fredo). I'd have to give the edge to Gazzo (Pentangelli).

GFIII - Talia Shire. At certain moments she over acts just a little bit, a "Bella Mafia" performance at times. But overall I think that Shire does a fantastic job in making her character transform from the meek Connie we are introduced to in GFI, the arrogant and rebelious Connie we see in GFII to the Strong, resilient and somewhat controlling Connie she turns out to be in GFIII. Runner up performance goes to Joe Mantenga. There are times, not many, but times, that Garcia shows a bit of promise in the movie, but like Don T said, overall he's just not convincing.