Donald Joseph Qualls (born June 10, 1978), known professionally as DJ Qualls, is an American actor, producer, and model. He is best known for his work in films including Road Trip, The New Guy, Hustle & Flow, and The Core and for several appearances on television series such as Breaking Bad, Supernatural, Scrubs, Lost, CSI: Crime Scene Investigation, and The Big Bang Theory. He co-starred in the FX comedy series Legit, and is co-starring in the Syfy horror series Z Nation. He was cast in the Amazon Studios show The Man in the High Castle.
He is also known as Donald Joseph Qualls and Donald Joseph "DJ" Qualls.