Trivia: Robert Patrick plays Matt Damon's father in the movie, even though in real life he's only 12 years older than Damon.
Trivia: The day John F. Kennedy was assassinated (11/22/63), school was let out early. When Maurey and Sam got to her house, it was 12:05 on the wall clock. When Sam went home, it was 12:25 PM. This makes it appear as though they knew about the assassination before it happened (around 12:30 PM), but Dallas falls under Central Standard Time (CST) and the movie is set in Wyoming, which is Mountain Standard Time (MST) or one hour behind CST. That is, 12 PM in Wyoming would be 1 PM in Dallas, Texas.
Trivia: Daniel von Bargen plays Bruce Willis' father in the movie, even though in real life he's only five years older than Willis.