Other mistake: The kitchen in Marie's and Frank's house is completely reversed in this episode than in the rest of the series.
Visible crew/equipment: The overhead microphone slips into the view many times.
Suggested correction: This needs to be way more specific.
Character mistake: At the very beginning, when Ray is picking up the food from the floor, he and Deborah refer to their kids with different names. They call one kid Matthew and the other Ray... Yet we know the twin boys as Michael and Geoffrey Barone. Also, in the same shot when he says, "Clean up Isle 2," you can see one of the bowls fall on the floor, and the second bowl is launched from the highchair without anyone touching it. (00:00:16 - 00:00:40)