During the opening scene when Carrie is going through her night stand drawer, she is holding a magazine and in a blink she is filing her nails.
When Doug goes to the garage to watch TV, he is carrying a bowl of cereal. When he notices the TV is missing he storms out of the garage still carrying the bowl. In the next shot the bowl is sitting on the table in the garage.
Arthur receives a copy of South of the Border. However, when Arthur puts on the record 'Tijuana Taxi' plays which is from another Herb Alpert album, Going Places.
When Carrie backs out of the garage to get Arthur's medicine, you can see two ropes
pulling the car in reverse.
In the scene after Carrie and Arthur are talking in the basement, you can clearly see a stage light during the exterior shot of the house on the left.