The film is dedicated to Katharine Curtiss (the wife of assistant producer and first assistant director Alan Curtiss), who passed away during filming. The name 'Curtiss' also appears on the estate agent's sign in front of Joe's house.
Alison Lohman had a minor role as a woman with cancer, but her scenes were removed from the final film. Because she had shaved her head for the part, she wore a wig during the filming of her next film, White Oleander (2002).
The part of Joe Darrow was conceived with Harrison Ford in mind. Ford declined the role to take a year off from films.
An estate agent's board outside Joe's house shows a real telephone number, 312-257-2738, for Curtiss Real Estate rather than the usual '555' prefix. The 257 prefix is not valid within the 312 area code covering Chicago.
The waterfall scenes weren't filmed in Venezuela. Logistical challenges and budgetary constraints meant they were shot on Kauai, Hawaii, where, interestingly, the waterfalls had to be entirely created using computer-generated imagery (CGI).
The aeroplane in question is a Cessna Cardinal RG.
Kathy Bates and Joe Morton each collaborated with James Cameron; Morton appeared in Terminator 2: Judgment Day, while Bates appeared in Titanic.
The Italian censorship visa No. 96231 was issued on 10 April 2002.
