 Pellegrino starred as Rita's abusive ex-con former husband Paul on Showtime's "Dexter"; and later as Lucifer on "Supernatural" and as the mysterious near-immortal Jacob on ABC's "Lost".He has appeared on the television series "Northern Exposure", "ER", "Without a Trace", "NYPD Blue", "", and "Knight Rider".He played the "Blond Thug" who stuffs The Dude's head down the toilet and drops his bowling ball, breaking the floor tile, in the cult film "The Big Lebowski".