Trivia: Smart Beavis and Smart Butt-Head are based on the Watchers from Marvel Comics.
Trivia: Richard's New York MD license plate has the "Statue of Liberty" along the left side. MDs with the special plate usually (if not always?) have the "Universal Symbol of Access" between the letters "M" and "D", as well as "Physician" written along the bottom of the plate. [Possibly a "factual error."] The "Universal Symbol of Access" allows some otherwise unauthorized parking areas to be used and extends parking time. (00:34:58)
Trivia: Nicolas Cage originally didn't want to make the film, as he felt uncomfortable with the idea of playing himself in a movie. The director wrote him a very nice note, explaining why the movie was important to him and how they wanted to celebrate Cage's wild and varied career, which won Cage over.
Trivia: The original script was very different, and much more downbeat. It would have focused on Randal spiraling into depression after Hurricane Sandy destroyed the Quick Stop and much of the town. A sort-of shantytown village is started in the parking lot of a movie theater by displaced locals, where Randall would make a new makeshift Quick Stop. Smith described it as a movie about dealing with grief. Kevin Smith ended up re-writing it into a more hopeful, upbeat film a few years later.