David Gordon Green's new film "Joe" has been gaining steam since first premiering on the festival circuit last year -- namely for featuring Nicolas Cage's best performance in ages. And while yes, Cage is indeed awesome in the titular role, his co-stars in the film are equally as strong. As it turns out, most of them weren't actors before making "Joe."

READ MORE: Why 'Joe' is a Comeback for Nicolas Cage and David Gordon Green

In this exclusive featurette for the Roadside Attractions release that comes out in theaters and On Demand this Friday, Green explains why he cast non-actors in major supporting roles alongside Cage and in-demand newcomer Tye Sheridan ("The Tree of Life," "Mud"). Cage also weighs in on what it was like to work opposite real-life folk such as Gary Poulter, a homeless street performer Green discovered on the streets of Austin. Sadly, Poulter passed away before he got to see the completed film.

Watch below: