Look Into Their Eyes and You See What They Know - S5-E19
Other mistake: In an earlier episode where Edie and Susan are driving Martha Huber's ashes to the lake to be spread, Edie gets a flat tire and Susan changes it. In this episode, all the girls are driving with Edie's ashes and they get a flat tire. Susan asks "Does anyone know how to change a flat tire?" Did she forget how?
Rose's Turn - S5-E20
Other mistake: Carlos carries Lynette to bed when she passes out after falling in the shower. She was obviously very wet all over when it happened, and is still wet afterward, however, his suit is completely dry.
Chosen answer: Poker. They have been playing that this whole time, once a week with everyone who was invited that lived on the Lane.