The 2000s offered a lot of different kinds of films, from the resurgence of R-rated comedies to hardcore trends in horror. It was a decade where the full spectrum of filmmaking styles was well on display, and that bears out in its best and worst releases. For all its essential films, though, there were many more that flew under the radar. Some were misunderstood masterpieces that were critically panned, while others simply never found the audience they deserved.