Earl Hindman plays Wilson on Home Improvement where the lower half of his face is always obscured. In the scene where the house is on fire, he appears gagged, with the lower half of his face obscured.
Director and producer Lawrence Kasdan cast two of his children and his wife in small roles in the film. His brother and co-writer Mark Kasdan also had a small role as a doctor that was filmed but ended up on the cutting room floor.
John Cleese's first line, "What's all this then?", is a Monty Python in-joke, as that line was often uttered by policemen upon entering the scene of a crime on Monty Python's Flying Circus.
In the scene where Augie tries to jump on Jake's horse and falls to the ground, the horse is wearing Jake's hat. This was Costner's idea just before the camera's rolled to keep with his character's goofy nature. Kasdan loved the idea and it stayed in the film.