Continuity mistake: When Cheech gets off the stage in the beginning of the final show, you can see the spotlights on him when he is walking towards the curtains. When it cuts to a wide shot Cheech is gone and the spotlight is off. (01:04:25)
Continuity mistake: At the end of the first film Mumble has lost most of his down, because his bow tie has yellow markings, however in the second movie he has somehow grown his down back.
Continuity mistake: When Cheech is turning over his car to pick up Chong you see him starting to turn over before he reach Chong. When it cuts Cheech has passed Chong before turning over. (00:07:40)
Continuity mistake: As the New Main Street Singers are performing their second song at the show, you can see Parker Posey pretend to use her guitar as a shotgun. The strap for the guitar drops from her shoulder down to her right forearm when she does this. When the shot changes the strap is back up over her shoulder. (01:01:40)
Continuity mistake: In the extended version of the DVD, there's a scene where Constanza goes to sleep with Salieri. In one shot there's a very prominent candle next to or just behind her on her right that smoking like it's just been extinguished. But from the front view there are no candles that close to her, and the ones a short distance away are all lit.
Continuity mistake: The white Mercedes has a sunroof in some shots, and not in others.
Continuity mistake: At the Record Label party, where the band meets Bobbi Fleckman, Nigel is wearing a coat. In another shot where the band meets Sir Dennis Eaton Hogg at the same party Nigel has no coat and different shirt.
Continuity mistake: During the "Limbo Rock" segment, the scene changes from shots of the council members dancing at Tilted Acres to Penny and Tracey's parents watching it on TV. The queue of the council members waiting in line to go under the pole changes between shots.
Continuity mistake: When X and Sweetness are having their skateoff, there is one seen where X grabs his right skate in his right hand and spins around. In the very next scene, his right hand is in the air.
Continuity mistake: In the scene where Ken is picking Rita up from school her bookbag is red with 2 triangles on it as they go around the school, after Rita gets on, her bookbag then turns blue with no triangles.
Continuity mistake: When Frank's dad is cutting mushrooms while cooking dinner, he slices a mushroom in a closeup. In the next shot, the mushroom is whole again.
Continuity mistake: At the end of the dress rehearsal, when the policeman looks around the corner, someone's shirt appears on the armrest of Nathe's chair. (01:01:40)
Continuity mistake: When the group goes to the diner after their first class, When Bobby takes off her hair piece clip and puts it back on, at first it's smooth then when the shot changes, it's all messed up.
Continuity mistake: In the "No Problem" scene, Alex lights up a cigarette while waiting for Isaach and then leaves it in the ashtray. Later on, when Isaach finally arrives, Alex offers him a cigarette and lights one for himself. The cigarette left in the ashtray disappears in the next shot.
Continuity mistake: When the choir are singing the first song that Deloris helps them with, Sister Mary Robert gains confidence and sings louder. Toward the end of the song, she puts her hands together in a praying gesture while she is singing loudly, but in the next shot her arms are by her side.
Continuity mistake: While Nick and Harold are jogging and discussing the possible buy out of Harold's business they are completely surrounded by fog. For 18 seconds they discuss this further in close-up. When they return to wide shot the fog is completely cleared up around them and is only visible in the distance now. (00:38:35)
Continuity mistake: In the scene where they are trying to find the stolen bus, they have that radar thing. In one shot the thing is showing that they should turn right yet they say left and go to the left.
Continuity mistake: When they are having the "piano duel", Jellyroll Morton stands up in front of the piano, and his chair slides back about a metre, the scene cuts to the audience, and then when it comes back a second later, the chair is back right behind him again.
Continuity mistake: About half way through the movie, the three main characters are in a loft. When the Asian girl grabs the postal worker's jacket, a cassette tape falls out of his pocket. As the girl bends down to pick up the tape, the camera shows here reaching with one hand, and then the camera switches to a close-up of her picking up the tape with the opposite hand.
Continuity mistake: When Micky is talking to the guy outside the audition room, he has a red book and pencil with him. When he goes into the audition room, the book has disappeared.