The Once and Future Smash is a 2022 mockumentary film directed by Sophia Cacciola and Michael J. Epstein. The film tells the story of Mikey Smash (Michael St. Michaels) and William Mouth (Bill Weeden), who both played the same football cannibal slasher character, Smash-Mouth, in the 1970 film, End Zone 2.

The film had a world premiere at FrightFest on August 29, 2022. The North American and United States premiere was held at Screamfest on October 19, 2022.

The film premiered publicly on August 6, 2024 on Starburst's web site.