I must have been an idiot when I first saw this film 800 years ago when it came out. From that time I had the lasting impression (short on details) that this was a maudlin romance. It turns out, however, that Ghost is a mostly inept, occasionally hilarious comedy, (often both at the same time)! Not content to have you wonder what's coming next, everything is blindingly obvious either through repeated clues or unending mugging. You've never seen a movie with more mugging in it than this one in fact (other then from Demi Moore, who is mug-free).
Meanwhile, it asks us to believe ridiculous things. The super-spacious "hidden" apartment they knock through to? Impossible. The through walls, though doors, not through walls and not through doors thing? Inconsistent, but consistently dumb. How long it takes Sam to figure out that Carl set him up, and why?! Absurd! Sam deserved to die based on that alone.