Could you imagine if Jack Nicholson played the role of Michael, rather than Sonny. Let's revisit the final scene from the first film:
Kay: Is it true Michael?
Michael: Don't ask me about my business Kay.
Kay: I want the truth!
Michael: YOU CAN'T HANDLE THE TRUTH!
"Growing up my dad was like 'You have a great last name, Galifianakis. Galifianakis...begins with a gal...and ends with a kiss...' I'm like that's great dad, can we get it changed to 'Galifianafuck' please?" -- Zach Galifianakis