Although he also guest-starred on both Star Trek: Enterprise and Star Trek: Voyager, Graham is perhaps most famous for playing Detective Matthew Sikes on the short-lived Fox series Alien Nation.
After taking acting classes at the University of California, Irvine, he was cast alongside George C. Scott in the 1979 movie Hardcore.
He appeared in a 2009 episode of Nip/Tuck.
He was born and raised in Long Beach and Orange County, California.
Early in his career, he appeared with Bruce Willis in an episode of the popular television series Moonlighting.