Were all a little sick of remakes. So prominent in cinema that they have their own subcategories - reboots (The Amazing Spider-Man), readaptation (True Grit) and shot-for-shot (Psycho), to name a few notable ones - even the most optimistic film fan rolls their eyes at the very mention of one. Everyone knows them and everyone bemoans them, as if its something new in cinema. Personally, I have no problem with a remake if the motivation is creative. While the likes of the Michael Bay produced horrors are obviously deplorable there can be some cracking ones. The Departed is the most commonly cited one, but the likes of Ocean's Eleven and The Thing are hard to fault. Even I Am Legend and The Wars Of The Worlds did something interesting. But whats more interesting (and often tolerable) than these prominent remakes are the films that take the plot of an existing movie and repurpose it. While it can sometimes be obvious (and more than a little derivative), sometimes great films are actually just ripping off already existing plots for their own needs. Here are eleven such films. Some are good in their own right, using the story to go in a new direction, but some sadly exciting concepts by producing a remake that no one really realised was one. Needless to say, there will be a fair few plot spoilers lurking here.