Kevin Dillon is an American actor best known for his portrayal of Johnny Chase in Entourage, Bunny in Platoon, and John Densmore in The Doors. He made a guest appearance as James O'Shea in the CBS crime drama television series Blue Bloods in the Season 7 episode, "Hard Bargain". He later reprised his role in another guest appearance in the Season 8 episode, "Close Calls".