also the infamous, "Just when I thought I was out, they pull me back in"
Thinking about all the great scenes, it's hard to chose one or even a handful. But the last scene in GF2 (best movie ever made imo) right after Fredo is put into retirement and we see the 'family' in simpler times and the ending with Michael all alone contemplating is just too perfect for words.
Re: Your favorite scene(s) from The Godfather movies
Woltz: I don't care how many daigo guinea WOP greaseball goombahs come out of the woodwork! Tom: I'm German-Irish. Woltz: Well let me tell you something, my Kraut Mick friend! I'm gonna make so much trouble for you, you won't know what hit you!