Factual error: Eazy-E sports a black Chicago White Sox hat with a white logo early in the movie in 1986, but the logo didn't officially rollout until 1991.
Continuity mistake: When the Bellas just got told that they are not allowed to compete any more they walk outside and Beca gets a call. When the camera is zoomed in on her you see her calling and moving a lot. When the camera is focusing on the other Bellas she is standing completely still in the background. When the camera is back on Beca she is moving again. (00:12:50)
Continuity mistake: When Shaggy and Scooby are approaching the Demon as he eats, it is shown that he is eating from a platter of hamburgers and french fries. Scooby and Shaggy bump into his table, knocking the food all on the floor. When Shaggy and Scooby quickly put all of the food back on the table, it now has french fries and hot dogs.
Continuity mistake: After Liz and Bev tell Bill that they can't cancel the show, they are helping him put his suit jacket on. Dimitri behind him is using a sticky roller thing to get hairs off the jacket and is down on his back. After Bev mentions the weather issues the camera angle changes and suddenly Dimitri has the roller up on his shoulder.