Extensive re-shoots forced Kevin Kline to withdraw from Hook (1991). He was replaced by Robin Williams.
Burt Reynolds turned down the lead role because his-then wife, Loni Anderson, said it would make her a Hollywood laughing stock, because Reynolds and Sally Field once had a very public love affair.
David Barnes (Robert Downey, Jr.) was originally written as a 50-year-old man. But director Michael Hoffman, who had worked with Downey before on an unfinished film called "Back East", had the part re-written to fit Downey's age.
Cathy Moriarty said this was her favorite performance.
Cathy Moriarty was cast at the eleventh hour after Geena Davis withdrew from the film to appear in Thelma & Louise (1991). Moriarty has said she is eternally grateful to Davis for this.