- Awesome, Dear Boy: Every big name who worked on the film personally requested to be in it because they either loved Beavis and Butt-Head or wanted to be in on a cultural phenomenon. Most of the actors even agreed to work for scale in exchange for a role.
- Creator's Favorite: Mike Judge has said that this is the only feature film he's directed that he enjoys rewatching.
- Development Hell: Offers to make a Beavis and Butt-Head feature began as early as the show's first season (which should give those not alive at the time an idea of just how popular it was), but Mike Judge and everyone else at MTV wisely decided to wait a couple more years until they were ready.
- Executive Meddling: MTV wanted to intersperse music videos throughout the movie just like the TV show did, but Judge didn't think general audiences would take the constant interruptions to the plot too well. The Mushroom Samba sequence featuring White Zombie's music and art was made as a compromise.
- Method Acting: Cloris Leachman created the old lady voice she does by keeping sucking candies in her mouth while she read her linesnote Other times, she'd eat a sandwich and let it stick to the roof of her mouth.
- Orphaned Punchline: Ever wonder why the band during the "Love Rollercoaster" scene are pounding out an rippin' Red Hot Chili Peppers song to a bored-looking crowd while dressed in powder-blue suits? That's because Mike Judge originally wanted to do a Creator In-Joke where a then-popular rock band would pretend to be a cheesy lounge act. Of course, when the filmmakers hired the Red Hot Chili Peppers, they got what they paid for and by the time the song was recorded, the scene was already being animated. Judge admitted that he liked this version of the scene better.
- Sleeper Hit: MTV gave the movie exactly one test screening and expected it to come in third or forth place behind surefire hits like 101 Dalmatians (1996), Scream and One Fine Day at best (it didn't help that it was released in December, which is usually Oscar season). Instead, it not only debuted at number one, but it was the highest grossing opening weekend for any movie released in December ever, dethroned only a year later by Titanic (1997)
- Unintentional Period Piece: Bill Clinton as president, mention of the band Hole, the depiction of Las Vegas... among others including the pre-9/11 airplane scenario, cements the movie in the mid-90's.
- What Could Have Been
- Warner Bros. originally wanted to do a live-action movie that would double as a vehicle for David Spade and either Adam Sandler or Chris Farley as the title character (in hindsight, a Beavis and Butt-Head movie staring the "Bad Boys of SNL" would have been the single most '90s thing ever). Mike Judge and everyone else at MTV hated the idea and after Viacom's acquisition of Paramount Pictures in July 1994, Warner Bros. dropped out. Judge then convinced Paramount that doing the film as animation would be much cheaper and more rewarding for certain scenes.
- The "virus" plot was originally about a virus that spreads and slowly turns people into Beavis and Butt-Head clones. Judge also pitched a joke concept of Beavis and Butt-Head eating lunch at Burger World for an hour and a half in real time.
Trivia / Beavis and Butt-Head Do America