Sunday in the Park with George - S1-E21
Continuity mistake: When Gabrielle throws some salsa in John's face, it makes a mess, especially in the eye area. However in the next shot his face appears completely clean.
Sunday in the Park with George - S1-E21
Revealing mistake: When Morty gets down on his knee to propose to Sophie, the angle of the camera shows the top of the set, which makes it seem as if there is no ceiling to the room.
Sunday in the Park with George - S1-E21
Continuity mistake: When Bree is out for dinner with George, the scene starts with a close up of her eating with her fork in her right hand. It then cuts to a wide shot of her suddenly holding her fork in her left hand, and then she switches it to her right hand.
Chosen answer: Poker. They have been playing that this whole time, once a week with everyone who was invited that lived on the Lane.