Barry W. Blaustein Director Johnny Knoxville Steve Barker Actor Brian Cox Gary Actor Katherine Heigl Lynn Actor Zen Gesner David Patrick Actor Leonard Flowers Jimmy Actor Bill Chott Thomas Actor Damian Fannin Special Olympics Volunteer Actor Edward Barbanell Billy Actor Lauren-Elaine Edleson Brandi (as Lauren Elaine) Actor Diana Heart Girl in Wheelchair Actor Brad Leland Mr. Henderson Actor John Rothman Priest Actor Jed Rees Glen Actor John Taylor Rudy Actor Rick Blitt Writer Robert Farrelly Executive Producer Peter Farrelly Executive Producer Clem Franek Co-Producer Garrett Grant Line Producer John Jacobs Producer Bradley Thomas Producer Mark Irwin Cinematographer Julio Macat Cinematographer Arlan Jay Vetter Production Design Mark Mothersbaugh Original Music