7. Harry Potter And The Deathly Hallows: Part 2 (2011)
Harry Potter 8 encapsulates just how money grabbing production companies can be. It took one of the middle length books from a series that so far had worked just fine turning 700 page tomes into two hour films and made it into two almost three hour films that managed to miss out some of the book's strongest elements, but worse than that, it took a series that had so far worked great in 2D and added a third dimension. Both of these changes were implemented purely to lengthen the life of the box office behemoth. Originally, both parts of the final Potter were going to be in 3D, but there wasn't time for a post-conversion (lesson learnt from Clash of the Titans). And thank goodness; the films cinematography was so dark that the added 20% colour loss from the glasses would have almost made it a radio play. As with Coraline, there are plenty of other movies that use 3D in the same way, having it needlessly appear in a franchise that had so far been in beautiful 2D; Transformers, Ice Age and Harold and Kumar all had third instalments jumped on the bandwagon, destroying any artistic continuity the franchises may have had, but Potter is the most ridiculous.