The trivia items below may give away important plot points.
Throughout the movie Pat and Tiffany use their wedding rings from their past marriages, although these are finished. But in the last scene it can be see that they no longer use them.
Jacki Weaver contributed to a critical aspect of the film. "I was sitting there with 300 other people in the ballroom watching the dance scene," she recalls. "It's crucial that they get 5 points in order to win the parlay bet. The judges kept holding up their scores in take after take. I'm not great at math, but I kept adding them up thinking, 'That doesn't add up to 5.' So I told one of the producers that it didn't average 5 and he said, 'Oh my God!' and they changed it. So yeah, I saved the film."
Pat Sr.'s OCD requires his TV remotes to always be on the table next to the couch facing a certain way. At the end of the movie, the remotes are on the coffee table in front of the couch because he is learning to control his OCD.