Matthew Lyn Lillard is an American actor, voice actor, director, and producer. He is known for portraying Chip in Serial Mom (1994), Emmanuel "Cereal Killer" Goldstein in Hackers (1995), Stu Macher in Scream (1996), Stevo in SLC Punk! (1998), Billy Brubaker in Summer Catch (2001), Jerry Conlaine in Without a Paddle (2004), Dez Howard in The Groomsmen (2006), Joey in Home Run Showdown (2012), Jack Rusoe in Return to Nim's Island (2013) and Shaggy Rogers in both Scooby-Doo (2002) and Scooby-Doo 2: Monsters Unleashed (2004). In animation, he has been the current voice of Shaggy since veteran actor Casey Kasem retired from the role. Lillard also stars as Dean Boland in the ongoing television series Good Girls.