I have definatly watched all three movies in one day before. Hey, that's what college is for.

As for the DVD, I have not yet watched all of it, I am savoring the first viewing of each disk, not wanting it to be over with too soon.

PS- I did do more in college than just watch the Godfather Trilogy, I meen come on...there's Goddfellas, A Brox Tale, Casino, Donnie Brasco, The Sopranos and so much more.