All Cast
Derek Richardson
Harry Dunne
Eric Christian Olsen
Lloyd Christmas
Mimi Rogers
Mrs. Dunne
Luis Guzmán
Ray
Rachel Nichols
Jessica
Eugene Levy
Principal Collins
Teal Redmann
Terri
Shia LaBeouf
Lewis
Lin Shaye
Margie
Elden Henson
Turk
William Lee Scott
Carl
Michelle Krusiec
Ching Chong
Dana Gould
Mr. Moffitt
Brian Posehn
Store Clerk
Jeff Cesario
P.A. Announcer
Cheri Oteri
Ms. Heller
Bob Saget
Jessica's Dad
Timothy Stack
Doctor
Wayne Federman
Officer Dave
Lucas Gregory
8-year-old Harry
Holly Towne
Preppy Student
Josh Braaten
Toby
Vahe Manoukian
Security Guard
Carl Mazzocone
Football Coach
Tally Barr
Girl
Lawrence Jordan
Man
Nancy M. Pimental
Museum Director
Julia Duffy
Jessica's Mom
Kevin Centazzo
Boyfriend
Tess Brewer
Little Girl
Jill Talley
Mom
Stacey Hill
Dog Driver
Nathan Wright
Nebbish Guy
Roger Eschbacher
Superintendent Zimmer
Julie Costello
Twin
Shawnie Costello
Twin
Dawn Michelle King
Woman
Colin Ford
Lloyd (at age 5) (uncredited)