I do love anything to do with the bending of the space time continuum- even if it doesn't always make sense and often leaves me scratching my head. And the really bad ones have been known to leave me yelling at my tv that just wouldn't work!!! In fact I enjoy them so much I've devoted entire posts to just such movies.
Now fellow movie maniac Mat introduced me to this little gem from Spain---Los cronocrimenes---Timecrimes, and I must say it lived up to everything he said about it. Done without a bunch of CGI that leaves you looking for a quiet place to rest your eyes, this movie is lean, even sparse. No fancy sets, no high profile actors, just a nice tight sci-fi thriller. You aren't here to watch the special effects, you are here to try to figure out what happened and more importantly, could it work.
It won't be everyone's cup of tea but it sure worked for me. Even with English sub-titles.