The Great Payne Robbery - S1-E11
Revealing mistake: Watch as the corrupt officer comes in to rob the Paynes. It's dark and Gina supposedly has tackled him, but you can see the officer kneel down and then Gina goes over to him to make it look as if she tackled him down when the lights came back on.
The Night the Lights Went Out at Melrose - S7-E13
Revealing mistake: At Melrose, Ryan tells Michael the whole block is out of power, but their whole pool area is well lit from the camera crew.