Justin Jacob Long (born June 2, 1978) is an American actor, comedian, screenwriter, and director known for roles in such films as Jeepers Creepers (2001), Dodgeball (2004), Accepted (2006), Alvin and the Chipmunks (2007), Live Free or Die Hard (2007), Drag Me to Hell (2009), Alpha and Omega (2010), Tusk (2014), Comet (2014) and The Lookalike (2014). He played Brandon St. Randy in the films Galaxy Quest (1999), Zack and Miri Make a Porno (2008) and Jay and Silent Bob Reboot (2019), Warren P. Cheswick on the NBC TV series Ed and appeared with John Hodgman in TV commercials for Apple's "Get a Mac". He hosted the Disney+ original series Shop Class.
Long was born the middle son of three boys in Fairfield, Connecticut, to father R. James Long, a philosophy and Latin professor at Fairfield University, and mother Wendy Lesniak, a former actress who has mostly appeared on stage. His paternal grandmother was of Italian descent. Long had a "kind of conservative" Roman Catholic upbringing. His older brother, Damian, is a local stage actor, teacher, and theater director at Weston High School. Long attended Fairfield College Preparatory School, a Jesuit school, and Vassar College, where he was a member of the sketch comedy group Laughingstock and starred in several plays, including Butterflies Are Free.