| Cast list | | Hugh Grant | as | Samuel Faulkner | | Julianne Moore | as | Rebecca Taylor | | Tom Arnold | as | Marty Dwyer | | Joan Cusack | as | Gail Dwyer | | Jeff Goldblum | as | Sean Fletcher | | Robin Williams | as | Dr. Kosevich | | Mia Cottet | as | Lili | | Joey Simmrin | as | Truman | | Ashley Johnson | as | Shannon Dwyer | | Alexa Vega | as | Molly Dwyer | | Aislin Roche | as | Patsy Dwyer | | Priscilla Alden | as | Older Woman | | Edward Ivory | as | Older Man | | James Brady | as | Bicyclist (as James M. Brady) | | Charles Martinet | as | Arnie |
| | Crew list: | | Chris Columbus (Director) | | Patrick Braoudé (Writer) | | Chris Columbus (Writer) |
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