My Heart Belongs To Daddy - S2-E4
Continuity mistake: When George is eating watermelon with Bree, the position the watermelon on his plate and the salt shaker on the table change between shots before George or Bree even touch them.
Continuity mistake: When Bree is at the restaurant by herself, she is wearing a ring around her neck on a chain which constantly moves position throughout the scene.
You Could Drive a Person Crazy - S2-E2
Continuity mistake: When Susan is screaming at Edie and she's going away, Susan's hands change position between shots.
Continuity mistake: Lynette goes to her second interview and has to take her daughter with her. When she is talking to Stu the receptionist he is eating a long sandwich. In the initial shots the sandwich is whole, but by the final cut away the sandwich has been cut in half lengthways, with the second half now on the desk in front of him.
It Wasn't Meant to Happen - S2-E20
Visible crew/equipment: When Edie discovers that Karl is leaving her for someone else and drops the letter that he wrote for her, a boom mic is reflected in the windscreen of her car.
Visible crew/equipment: As Susan and Edie approach Bree to ask her about the Applewhites, a camera crew is reflected in the side of Bree's car.
Answer: He was investigating the lead not the case.