LL Cool J

LL Cool J is a Grammy Award-winning rapper and actor. He has released 13 albums since his 1985 debut, Radio, and is behind such hits as "Mama Said Knock You Out" and "Hey Lover." As an actor, he has starred in the films Toys, Deep Blue Sea, Any Given Sunday and Last Holiday. Since 2009, LL Cool J has portrayed Sam Hanna on the CBS drama NCIS: Los Angeles, co-starring Chris O'Donnell. Recently, he announced his partnership with SiriusXM as the host of the classic hip-hop channel Rock the Bells Radio. He has also hosted the Grammy Awards many times and currently hosts the reality competition series Lip Sync Battle.