29. The tentacles
Movie: The Mist (2007)
For his adaptation of Stephen King's excellent novella The Mist, writer-director Frank Darabont's initial plan was to release the film in black-and-white, in order to give it the look and feel of an old 1950s monster movie. In the film's two-disc special edition DVD package, viewers have the option of watching The Mist in that de-colorized format, and it's remarkable how much better its CGI creatures all look as a result.
In shiny palettes, some of The Mist's antagonists are still impressive, namely the pterodactyls and acid-spewing spiders. But the mostly unseen, tentacled beast that kicks off the film's horror early on is an unfortunate victim of Darabont's limited budget and inability to convince the studio to go black-in-white.