Shooter Jennings and Joaquin Phoenix
by Eric Charbonneau/WireImage.com
The prison was the site of Johnny's landmark 1968 concert, which produced the award-winning album Johnny Cash at Folsom Prison
. Joaquin and Shooter Jennings, who plays his dad Waylon Jennings in the movie, performed a few acoustic songs at the prison's Greystone Chapel for approximately 54 inmates. The prison warden presented Joaquin with a license plate made by the inmates inscribed with his name.