Lois and Hal discover in their closet that they have a secret toilet that nobody in the house ever knew about. It's never referenced again in the series.
When Lois & Malcolm are weeping, either her left cheek or right cheek is against his head, Dependent upon which camera views them.
When Lois & Malcolm are weeping, we see her move her hand from his shoulder to his head. Change camera and her hand is on his shoulder.
Reese holds up a hockey mask to his face with his left hand (at top left corner of mask). Change camera and he holds it with his right hand.
Reese turns in his seat to see his mom and the therapist at the door. The bag that was hanging on the back of the chair is missing.