Visible crew/equipment: When Dianne's daughters have locked themselves alone in the room, just as Jerry is about to put the keys in the door to unlock it so they can prevent the girls from cutting their hair, the boom microphone dips into view in the room where the girls are alone. This boom mic is not from the "documentary" crew. (00:13:25)
Character mistake: During Garth's Filibuster, the Marvel characters come into the Star Wars universe because Thanos is using the Infinity Gauntlet's Reality Gem to cross realities. The gem allows the wielder of the Gauntlet to MOLD reality to his desire, but an Infinity Gauntlet does not work outside it's home universe/dimension, so Thanos wouldn't be able to "jump from different realities" with it. Someone that well-versed in the Marvel Comics universe would know this.
Continuity mistake: Andy is explaining that he wanted his coworkers to steal something from him so he can practice his investigating skills. In one shot his sunglasses are hanging at the middle of his torso and when it cuts to a closeup and back out the sunglasses have magically traveled up to his neck as he exclaims "did you guys steal my sunglasses too?" (00:15:00)