[3] Bellamy has appeared in numerous films and television series, including Scrubs, Treme, 24, Chicago P.D., Justified, Criminal Minds, Gotham, and Paradise City.

He portrayed the Reverend Lester Coggins in the first season of the CBS adaptation of Stephen King's Under the Dome.

Bellamy became a fan-favorite on an episode of Seinfeld, portraying Eddie, Julia Louis-Dreyfus’ army veteran co-writer in "The Fatigues".

His television career began with another veteran—Paul, an American-born German soldier, in the final season of The Waltons.

Bellamy played Wilson in Quentin Tarantino’s seventh film, Django Unchained.