One-Book Author: The only game show hosting gig for Kevin O'Connell, who was otherwise largely a meteorologist. Well, gig that made it to series, at any rate- he hosted the 1986 RegGrundy pilot Keynotes (which would find success in the UK and Australia), and the 1987 Bob Stewart pilot Money in the Blank (which recycled the match board from Stewart's earlier Three on a Match).
Actor-Inspired Element: Timothy Olyphant thought that Todd needed a neck tattoo. However, Doug Liman thought it was a bad idea, because it would make him appear too sinister. The next day, Olyphant showed up with a temporary tattoo of a pair of flaming dice that the make-up department had stamped on his neck. Liman ended up liking it and it stayed in the movie.
The original script was titled X, and it would have been a short film that only covered Ronna's plotline: Scriptwriter John August's friends encouraged him to expand the story, specifically wanting to know what happened during Simon's trip to Las Vegas and what Adam and Zack's backstories were, which led to the Simultaneous Arcs structure.