Sarah contacts a physicist named Clifford Johnson. This is the name of an actual scientist who worked on the movie, helping the filmmakers come up with an original premise for a time-loop story.
Andy Samberg said that multiple endings were written and even shot. They held private friends and family screenings of the different versions to get opinions on which ending worked. Samberg jokes, "All right, it might not be perfect but everyone liked it!"
Holds the record for the biggest sale of a film at the Sundance Film Festival--at $17,500,000.69, beating the previous record by 69 cents.
The scene between Nyles and Roy in which Nyles compliments Roy's hat and Roy responds "Of course you do" was improvised between Andy Samberg and J.K. Simmons.
Broke the record for most-viewed Hulu release in its first weekend on the streaming service.