Try this one :  in The Dark Knight, the Joker has just dropped the chick off the top floor.  Batman, being the hero of the film, does his thing and dives off after her.  That isn't the problem.  The problem, kids, is that no one seems to realize that Bats just left the Joker, quite possibly the most homicidal cat in Gotham, alone in a room just chock full of victims.  Alfred must have spent weeks cleaning up that one.  Way to go, Bruce.


But that's nothing compared to his pal Superman.  You see, in Superman : The Movie, that dastardly Luthor has just detonated a nuclear warhead on the San Andreas fault. Bad man.  This causes a damn to bust, threatening to wipe out a nice little town. Well, it would, if The Man of Steel hadn't built a makeshift dam.  Unfortunately, while he's doing that, Lois (his One True Love) is busy falling in crevice and, um, dying.  This naturally doesn't sit well with the Last Son of Krypton so he decides to ignore physics, reason and all the rules of clever writing and reverses time by flying around the earth really fast, thereby saving Margot Kidder's life.  All is well, except for one teeny little thing : that dam still burst, that town is still toast, only Supes is too busy using his X-Ray Vision, if you catch my drift.
There, Vizzed, top that.