I find the name Bonasera very funny because it is translated 'Goodnight'in English. Very appropriate for an undertaker.
I also crack up laughing(not just smiling) every time I see The Don mimic Johnny Fontaine crying 'What am I going to do Godfather,what am I going to do?'. When I was a kid my father would do the same thing to me when I would cry/whine (no slap!!!) and I always stopped crying and would laugh.Tom Hagen got a kick out of that interchange also.