Subsonic frequencies are present in movies, though it's not too common. Dusty is right though, there seems to be a trend lately for movies to throw in low frequencies just for the sake of increasing tension...but I'm not sure just how low those notes they are using to do that reach. SVS has a good selection of waterfall charts to give a visual of how deep some movies/music tracks go:
SVSound - FAQs
SVSound - FAQs
I never realized Blue Man Group - PVC had such low frequencies, strong 10hz presence: