Color and Light (a.k.a. I Must Be Dreaming) - S2-E7
Continuity mistake: When Gaby goes outside to ask for help with her dress, you can see that the door is open when she leaves, but a couple of shots later the door is closed, despite Gaby not being near it.
Color and Light (a.k.a. I Must Be Dreaming) - S2-E7
Visible crew/equipment: Right at the beginning of the episode, we see a woman drop her daughter off at a strangers house. When the front door opens, a camera crew is reflected in the brass door knocker.
Color and Light (a.k.a. I Must Be Dreaming) - S2-E7
Continuity mistake: When Julie finds out about Susan and Karl sleeping together, the tightness of Susan's dressing gown changes several times throughout the scene.
Chosen answer: Poker. They have been playing that this whole time, once a week with everyone who was invited that lived on the Lane.