My one is Terminator the original. I get that the machines they can create a machine, i’ll even given them for creating human blood but one thing that bothered the shit out of me. Is they can probably read and write different languages but how in the hell or why do you make a robot have a german accent?
The Sixth Sense. Once you know the twist the entire movie falls apart upon scrutiny and becomes dumber upon rewatch. The entire plot of that movie is in service of the twist reveal. Unlike Fight Club where you only get to experience that first viewing once and then the movie becomes very different (and arguably better) once you watch it again.