At the end of the show, Carrie is dancing with Doug at reunion - no purse on her shoulder. Then her taupe purse is on her shoulder, and in the next shot no purse again.
Danny reaches over his head to take a beer from Deacon. It then cuts to a different angle and Danny is already holding the beer in front of him and opening it.
When Spence tells Doug about having an affair with the teacher, the Doritos bag changes position on the couch between shots.
At the beginning of the show as Doug and Spence are sitting on the couch in the garage, there's a spare tire behind the couch beside the fridge. After a while in another garage scene, the spare tire isn't there anymore.