Revealing mistake: The sign with "everything must go" breaks a second before it hits Arthur. (00:02:55)
Suggested correction: The sign with "everything must go" breaks at the exact same second as it hits Arthur, and there is no point to make it somehow break by some weird special effect without any sense.
Revealing mistake: When we see Arthur go through taped Murray shows, he operates the VCR controls of his brand new Panasonic VCR. Problem is, it's not turned on. The red power LED on the far right is not lit, nor are any of the LEDs on top of the various keys (even the stop button had a static red light), or the large display where the clock would be. (01:22:15)