He is best known for playing Uncle Ryan on Everybody Hates Chris (2008–2009), and television producer Dirk Black on the UPN/The CW series All of Us (2003–2007).

[2] The son of Rosalie (née Tingman)[3] and Julius Rock (d. 1988), he grew up on Decatur Street in the Bedford-Stuyvesant neighborhood of New York City.

[4] He performed in New York with Mark Curry and John Henton to highlight the Apollo Theater.

In the same year Rock appeared in David E. Talbert's What Goes Around Comes Around and began hosting Apollo Live on BET.

In early April 2022, a video surfaced online of Rock performing a stand-up show while reacting to the Oscars incident where his brother Chris Rock was physically assaulted on stage by Will Smith after he had made comments on Smith's wife's bald appearance.