When you sit watching a bad movie it is normally the culmination of a long series of bad decisions. Chief among them you spending your hard earned cash on a ticket, but we're talking less about your shockingly poor judge of quality (did Movie 43 really look funny to you?) and more about how the film itself has came into being.
Lots of things can go wrong in the journey from concept to screen. Although a truly terrible script can be spotted, without any sensory input a mediocre one can appear stellar, while a great one can crumble under bad direction (just see the varying success of movies from Hollywood's widely-revered Black List of unproduced scripts).
Of course, that's not always the case. Whether it led to a destructive chain reaction, or was so heinous it overshadowed everything else in the film varies, but there're some choices made during production that single-handedly manage to derail what could have been pretty damn fine movies. Today we're going to bring you twelve movies that could have been awesome, but one dumb decision led down a path of destruction. Quite how no one realised they were leading themselves to critical (although in most cases regrettably not commercial disappointment) is, frankly beyond us, but movie-making is a strange business.