A word of warning. These are movies I find entertaining for their geeky content. Some may find them cheesy or just plain bad. I am sorry if these recommendations fall into those categories for you. Remember that these movies are off the beaten path for a reason.
John Dies at the End - A psycho-active substance allows people to see other dimensional beings so they can fight an "infection" from across the rifts of time and space. Lots of cool geeky moments and parts played by "that guy" including Paul Giamatti. Not for kids due to lots of language and nudity.
Odd Thomas - Odd is his name. He can see and sense things which allow him to solve crimes. There is a large spiritual storm brewing and Odd is the only one who can figure it out.
The Extraordinary Adventures of Adèle Blanc-Sec. Adele goes to Egypt to bring back the mummy of the surgeon of Ramses to cure her sister. Then the pterodactyl causes issues for her scientific ally and mentor.
Journey to the West - Two demon hunters try to solve murders and destroy and imprison demons in ancient China. The Monkey King turns out to be more than they bargained for.
Solomon Kane - Based on Robert E. Howard's 2nd most famous character. Solomon roams the land looking for redemption while vanquishing demons.
Man of Tai Chi - The hero is the world's greatest martial artist until an underground fight promoter turns him into a killing machine. The movie steams along until the final battle with Neo...er Keanu Reeves. Yes, really.