Triangle

Director: Christopher Smith

IMDB: https://www.imdb.com/title/tt1187064

Review: Manages to keep up with itself and take into account the guessing of its audience while delivering a well thought-out plot and some great visuals and ideas.

Watch it if: You want something that can still surprise you even when you think you've figured it all out.

And if you liked: Final Destination, Coherence, Timecrimes