Channing Matthew Tatum is an American actor and film producer, best known for his roles in Step Up , G.I. Joe: The Rise of Cobra , Dear John , The Vow , 21 Jump Street and Magic Mike . He has also appeared in films such as Coach Carter , She's the Man , A Guide to Recognizing Your Saints , Fighting , and The Dilemma and G.I. Joe: Retaliation . While known for his performances in drama and action films, he has also ventured into more comedic roles.