From Wikipedia, the free encyclopedia. Glenn Fitzgerald (born December 21, 1971) is an American actor who has had over 30 roles in movies or television series. He played the character of Sean in The Sixth Sense. Some of his other movies include Series 7: The Contenders, Neal Cassady, Confess, Flirting With Disaster and 40 Days and 40 Nights. In the theater world, he starred in Kenneth Lonergan's Lobby Hero. He starred in the show Dirty Sexy Money alongside Peter Krause who he worked with in 3 ...