South Park: Bigger, Longer & Uncut (1999)

Plot hole: The kids dig a hole and a spotlight goes over it. Wouldn't the operator notice the hole in the ground? (00:56:30)

A Demon

Plot hole: The night of the La Resistance meeting, before Kenny appears as a ghost, Cartman can be seen putting a mirror and a rope into his backpack. These are items that The Mole requested they bring for the rescue operation, but they hadn't met The Mole yet. How did Cartman know what to bring? (00:41:25 - 00:59:15)

Plot hole: Christophe, or 'The Mole' as he was known, asks if the boys brought the rope. But why does he need any, he carries rope over his shoulder the whole time he's on screen. (00:53:30 - 00:59:15)