The Fresh Prince Project - S1-E1
Revealing mistake: When Will staples his Malcom X poster to the wall, the wall bends back and forth for a second or two.
Dawn and the Haunted House - S1-E2
Revealing mistake: Stacey can be heard whispering instructions to the kids she and Dawn are watching. This was due to a last-minute change in the scene that caused confusion among the young actors, and the older actress needed to help them with the new instructions.