Fuller has also appeared in many television shows, including "Knight Rider", "Timecop", "Quantum Leap", "L.A. Law", "Murder, She Wrote", "Ally McBeal", "Felicity", "Malcolm in the Middle", "The West Wing", "Boston Legal", "Boston Public", "House", "Monk", "Desperate Housewives", the live-action version of "The Tick", "Charmed", "Carnivàle", "My Name Is Earl", "Ugly Betty", "Glee", "Drop Dead Diva" and the pilot episode of "NewsRadio". He has had a recurring role as Woody the Coroner on "Psych" and another on "Supernatural", depicting an angel called Zachariah. Fuller later reprised the role for "Supernatural's" 300th episode "Lebanon." He also acted as a Senior Police Officer in the 2000 comedy "Scary Movie", who is the commanding officer of Doofy.