Todd Nasca's "twinky" speech was an ad-lib.
Brian Haase came to set with the stomach flu and did his entire scene with an IV sticking out of his arm.
Jeremy Mitchell refused to take off his pants for the bedroom scene and you can see him holding on to the bedroom sheet throughout the shot.
During a night shoot the crew was surrounded by a bunch of drunks that wouldn't let them shoot unless they were given lines.
Gary Wayne was unavailable for his death scene and Todd Nasca's hand is holding the gun in the shot.