Continuity mistake: The angle of the desk lamp's shade changes as Matt sits on his bed, suddenly angling towards the camera. The shade is back to facing downward but angles outward again a couple of times. (00:05:18 - 00:06:24)
Deliberate mistake: Except in certain angled views of Fred (with Matt in the passenger seat), the rearview mirror is darkened/blackened. (00:08:55)
Continuity mistake: Matt puts a large bag of dog food onto the checkout counter. After Julie takes his money and hands him a business card, there is only a brown paper bag (containing the smaller items he buys) but no dog food bag on the counter. Matt is not moving to remove the dog food bag from the counter, and it does not seem to be in his shopping cart. (00:29:19 - 00:30:37)