Michael Grant is a concert pianist and performed all of the piano pieces. He also helped the filmmakers pick the compositions that he played in the film.
Tom Wopat drove his own truck in the film. The production team had a picture truck for Tom to drive, but he showed up to set in his own car which was so perfect for his character, Richard, it was used instead.
The film was shot in only 14 days.
Train scenes were shot at a train museum. Wider shots of James on the train could not be used as the seats revealed it was an antique.
The diploma on the wall of the re-programmer indicates the recipient graduated from Gallaudet College, which is unusual since that is an institution solely for the deaf. Could be a sly statement referring to a hidden trait of the single-minded doctor who fails to hear what his patients are saying.