Visible crew/equipment: When Claire runs away from Bob after he calls her "Ms. Bennet", you can see Bob's shadow and another person's shadow on the ground. Since no one else was standing next to them, it has to be a crew member, most likely a camera man based on the odd shape of the shadow.
Continuity mistake: At the start of the episode when Vinnie and Rocket search for Gabby's pet badger, after updating her, Vinnie goes back into his bedroom where Rocket is seen in the room pulling out a pirate's peg leg, Professor Q's "oscilloradioscope", and a baking soda volcano from behind his back. However, for about a frame, the other 2 items were also peg legs before turning into the respective item. His mouth also tilts between frames. (00:00:25)
Continuity mistake: In the cafeteria, when Oliver joins Miley and Lilly at the table the food and trays change position, particularly the milk carton. Then when Oliver stands up and announces that Lilly has the two tickets, suddenly the apple has changed trays and the juice box and milk carton are lying flat.
Continuity mistake: Moss and Roy are in Jen's office to ask her if they should "connect her to the matrix", while Jen is working on her computer. Jen shouts back, asking them to stop undermining her, and the monitor has disappeared. (00:13:45)