| Henry Winkler | Chuck Lumley |
| Michael Keaton | Bill Blazejowski |
| Shelley Long | Belinda Keaton |
| Gina Hecht | Charlotte Koogle |
| Pat Corley | Edward Koogle |
| Bobby Di Cicco | Leonard |
| Nita Talbot | Vivian |
| Basil Hoffman | Drollhauser |
| Tim Rossovich | Luke |
| Clint Howard | Jefferey |
| Director | Ron Howard |
| Producer | Brian Grazer; Don Kranze |
| Writer | Lowell Ganz; Babaloo Mandel |
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