Corrected entry: In the scene where they are heading to boston they are in a convertible with the top up, and when they pull into the rest area, the top is now down.
Corrected entry: At the beginning of the movie when Melvin is trying to get the dog in the elevator he presses a button to keep the door open, but after he puts the dog in the garbage shoot, he never released the button. When Simon comes out of his apartment to find his dog the elevator door is closed.
Corrected entry: In the scene where they are driving to Baltimore, Melvin is in the back seat listening to Simon's story about his father. Melvin has his sunglasses on his forehead, after a point in the story he raises his eyebrows so they fall back onto his nose. In the very next shot they are back on his forehead.