It turns out James Caan, Al Pacino, and Robert Duvall are human after all. As all three crack up during rehearsal.

Even after his death, James Caan is finding ways to make us smile. In this unearthed footage from the iconic film, 'The Godfather', we see (from left to right) Robert Duvall, James Caan, and Al Pacino.

The three legendary actors are in the middle of rehearsal when Caan delivers an absolutely incredible line, and immediately makes Duvall crack. From there it's basically 'SNL' and nobody can hold it together.

Pacino seems to be fairly reserved at first, but as they try to get back on track even he begins to break character.

It seems like we see these kinds of bloopers and outtakes all the time with comedies and TV shows. But to watch something like this in a rehearsal for such an iconic and serious film. It's refreshing. You gotta keep it light.