Hello I'm new here so I don't know if anyone has noticed this or not but I have been watching this movie like once a week (at least) for the past 3 years and have never picked this up until now..

At the end of Godfather III, after there is a flashback to the loves of Mike, there is a dissolve to a much older Michael who puts on his sunglasses, then puts his hands in his lap. If you watch the next long shot carefully, you see that his right hand sits in his lap, holding an orange. His left hand falls, then his right hand falls releasing the orange to the ground, then Mike finally falls.

Pretty cool Huh!