Mark Christopher Lawrence (born May 22, 1964) is an American character actor, stand-up comedian and voice-over artist. He is perhaps best known for his role as esoteric D.J., Tone Deaf, in the 1994 satirical rap mockumentary, Fear of a Black Hat. He has co-starred in popular films such as Terminator 2: Judgment Day, Planet of the Apes, Lost Treasure and The Pursuit of Happyness. Lawrence can currently be seen in his regular role as Big Mike on the NBC series Chuck. He has made guest appearances on many television programs, most notably Heroes, My Name Is Earl, Crossing Jordan, Dharma & Greg, Malcolm in the Middle, Touched by an Angel, Malcolm & Eddie, Men Behaving Badly, Seinfeld, Murphy Brown, and Martin. He is also featured on the Radio Series Adventures in Odyssey as "Ed Washington".

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A seguito dell'ottimo rendimento scolastico al college, vince una borsa di studio con la quale riesce a iscriversi e pagare gli studi alla University of Southern California, istituto in cui prosegue il cammino di oratore e recitatore vincendo vari tornei a livello universitario e studentesco. Contemporaneamente alla frequenza nell'USC si iscrive al Los Angeles Theater Center dove impara meglio a recitare, proprio qui viene notato da un agente professionale di Hollywood che gli procura il debutto televisivo affidandogli un ruolo nella serie cult poliziesca Hill Street, giorno e notte.

Una volta laureatosi alla USC entra a far parte del gruppo comico San Francisco Mime Troupe e con spettacoli esiliranti guadagna fama oltremare partecipando a tour in Australia e Canada.