Welcome to the BB, ant! If you're so big a fan as you seem to be, let's hope you stick around. Been too many just popping in and out recently.
And a nice question to start off. (If you're unsure if a topic has been posted before, use the "Search" button at the top.
As for me: I too use the quotes everyday, and confuse my friends, who have attention spans of fishes (not the Luca Brasi kind) hence have never seen the film. I also automatically compare a new gangster film with The Godfather (so more times than not I am disappointed by the standards these days). I also go about things the way Michael and Vito very much did; I keep (or at least try to keep) my enemies closer to me than my friends. I also have a resonable approach to asituations, very much like Vito.
Mick