His feature film debut was in the Warner Bros comedy The Replacements with Gene Hackman and Keanu Reeves. His breakthrough role came in the form of the character Roy in the wildly popular television series The Office. He went on to star in numerous indie films and play supporting roles in numerous blockbuster movies. He also starred in the short-lived but critically acclaimed Traffic Light for FOX and has played recurring roles on many acclaimed television series such as Parenthood (NBC). Denman is also an avid Shakespeare buff and has performed in dozens of Shakespearean productions. He continues to return to the stage as often as possible. In 2017 he starred in the movies Power Rangers and Logan Lucky.