He played personal presidential aide and Deputy Special Assistant to the Chief of Staff Charlie Young on the NBC drama television series The West Wing, for which he received an Emmy nomination Outstanding Supporting Actor in a Drama Series, and pharmaceutical salesman-private detective Burton "Gus" Guster on the USA Network television comedy-drama Psych.
He has also had minor roles in the movies The Guardian, Holes and She's All That and a recurring role on Ballers.
and Rachael Leigh Cook, with whom he later reunited on Psych, as a Los Angeles doctor named Owen in the movie and series 10.5, the Disney movie Holes as Sam the Onion Man, in which the movie itself was referenced in the Psych episode 65 Million Years Off, and in The Guardian.
Hill also appeared on Broadway in Stick Fly from December 2011 to February 2012 and After Midnight in November 2013.
She believed herself married to the owner of a relatively successful software company.
During his time at Seton Hall, he was cast in a starring role in Bring in 'da Noise, Bring in 'da Funk on Broadway.
In 1999, Hill was cast on The West Wing as Charlie Young, the personal aide to President Josiah Bartlet, who was played by Martin Sheen.
When the music could not be found for his routine, telethon host Jerry Lewis helped by having the orchestra play another song while Dulé performed.
His first film role in Sugar Hill came in 1993 during his senior year of high school.