When Susan asks Karl about a picture of them together, Karl puts it in his shirt pocket not exposing the picture. Seconds later, seen from another angle the image is turned around with the picture exposed.
When Peter throws Bree on the table he knocks over a vase of yellow tulips onto the floor where they cannot be seen, however in the next shot the yellow tulips can be seen poking out from the dining room chair.
When Lynette starts talking to Andrew, her car door suddenly goes from closed to open between shots.
When Bree is talking to Lynette about what Lynette would say to Andrew's lawyer, in the shots facing Bree her right hand is on top of her arm, but from behind, her hand is under her arm. This happens again in the next shots.
Peter says that he is a member of SA, and expands it to "Sex Addicts Anonymous". However, SA is "Sexaholics Anonymous". Sex Addicts Anonymous is SAA.
Baby Lily is supposed to be a newborn, but she must be like 4 or 5 months old. When she is supposed to be tucked in a blanket, it's very obvious that they're using a doll that is much smaller than the actual baby.
Shadow of a movable baldachin (used to hide the crew's shadow) and of the boom mike visible when Susan and Julie leaves their home.