Revealing mistake: When Hall races toward the window to jump, the stunt man is just a little too apparent as he leaps, primarily due to a very bad wig. (00:22:40)
Continuity mistake: Hall leaps through the plate glass window. In the interior shot, he breaks the glass and is 3/4 of the way through the opening (up to his knees) - until we cut to a view from outside the window. Then he's just crashing through at shoulder level. (00:22:45)