Funniest Scene in The Godfather Films?

Part III: The Entire Film WAS A JOKE!

But Seroiusly, I would have to say Johnny asking the Don to make Woltz give him the part

Madness! Madness!
- Major Clipton
The Bridge On The River Kwai

GOLD - GOLD - GOLD - GOLD. Bright and Yellow, Hard and Cold, Molten, Graven, Hammered, Rolled, Hard to Get and Light to Hold; Stolen, Borrowed, Squandered - Doled.
- Greed

Nothing Is Written
Lawrence Of Arabia