One unresolved plot point that still drives me crazy is from Inception. At the end, Cobb finally gets back to his kids, but then we see his spinning top, the totem he uses to figure out if he's dreaming or not. The problem is, just as we’re about to see if it falls or keeps spinning, the screen cuts to black! We’re left wondering if Cobb is still stuck in a dream or if he’s actually awake.
