Continuity: At the end of the movie when everyone is in Wayne's basement, we see Benjamin painfully walk up to Wayne's house for each ending in the dark. When the scene changes to Wayne's basement for the first ending, you can see through the basement window directly behind them that it's broad daylight. This is especially easy to see when the equipment starts to spark.

Continuity: When Wayne and Garth are on their way to the Alice Cooper concert they show the car from behind you can clearly see that Garth is driving and Wayne is in the passenger seat but when they cut back to the car from inside Wayne is driving and Garth is in the passenger seat.

Continuity: When Benjamin introduces himself to Wayne and Garth, Benjamin lowers his arm. When it cuts to Russel introducing himself, Benjamin suddenly has his arm up looking at the watch.

Factual error: In some of the shots of the band playing, it is very obvious that Cassandra isn't playing her bass correctly. Particularly in the basement performance, where she sometimes doesn't even move her arms at all while singing.

Factual error: When Wayne and Garth are driving to the Alice Cooper concert in Wisconsin, they pass palm trees while driving the expressway from Chicago. There are no palm trees on any expressway in Illinois or Wisconsin.

Continuity: Outside the gas station when Garth ask Wayne if he's gonna marry Cassandra, we see Wayne taking off his headphones and lowering his arms. When it cuts his arms are up in shoulder level.

Continuity: When they meet officer Koharski outside the donut shop, Both Wayne and Garth slightly lift their left arms. When it cuts their arms are down.

Continuity: When Ron Paxton begins to demonstrate the Suck Kut on Garth's head, Ron's tie is hanging straight down. When it cuts the tie is bent upward over Ron's wrist.

Continuity: Rob Lowe is introduced to Brian Doyle Murray as Benjamin Kane. In the credits Lowe is billed as Benjamin Oliver.

Continuity: During the meeting with Vanderhoff about airing Wayne's World or not, the pen on Russel's file in front of him keeps appearing and disappearing between the shots.

Continuity: Near the end of the movie in the scene where Garth is stabbing a doughnut-person with a hockey stick shaped pencil, the eraser changes from pink, when he's stabbing it, to blue, when it's standing on its own.

Plot hole: In the scene where Wayne and Garth are trying to get Mr Big to hear Cassandra's band, they refer to when they spoke to the security guard earlier in the movie. They claim he said Mr Big would be in Chicago on Friday when he actually didn't - he never mentioned a specific day at all and just said he was travelling that way next week.

Continuity: When it shows Garth reaching for the Claudia Schiffer poster we see Garth placing his other hand on the couch. When it cuts his hand is on his lap.

Continuity: When Wayne and Garth are driving to the Alice Cooper concert, you see Garth pulling out a string of candy. The length of the candy changes between shots.

Continuity: When Wayne is interviewing Vanderhoff on his show. He takes the liberty of placing some humorous slogans on the back of the question cards. However, the one about goats returns to the front of the pile when the camera cuts to a more distant shot and Wayne puts the cards down.

Continuity: When they find Phil hungover, sitting on a bench outside Powell Camera Shop, it shows a man standing by the window right behind Phil. When it cuts to a close-up of Phil, the man is gone.

Factual error: When Wayne and Garth drive to Milwaukee, they leave Chicago, the sign reads Wilson Ave, when they announce their arrival - a very similar shot pops up reading Wilson Ave.

Visible crew/equipment: When Wayne and Garth are playing street hockey, there are two cars that interrupt their game. Look in the reflection of the second car, you can see a very long boom mike.

Continuity: When Benjamin is playing the video for Noah Vanderhoff in his office, Wayne says "...put that thing on your, on your melon," stuttering a bit. However, earlier in the movie during the "live show" he does not stutter.

Audio problem: Near the end of the movie when the band is playing the song for the guy in the limo when shes singing the chorus to the song the voice changes from the original song to her voice.