Revealing mistake: When Kim is leaving Gatwood Oil and realises her car is stuck in the dirt, the car is still in park. No wonder it's not going anywhere.
Continuity mistake: Jimmy shows up at Irene's door with a box and some balloons. From the side view as she opens the door, the balloon with flowers on it is closest to the door with the pink and blue peppermint swirl balloon behind it. When the camera cuts to looking at Jimmy from inside over Irene's shoulder, the peppermint balloon is now in front with the flower balloon up higher between it and the other balloon. (00:28:36)
Factual error: If Chuck had shut off all the electricity, the meter would be moving imperceptibly slowly, if at all. (00:30:31 - 00:34:20)
Answer: It might be the Panavision cap he wore when directing his terrible commercials.