In his book on depression, Dr. Neil Nedley outlines the harmful effects of TV and movies of today. I am not sure about the frame rate and subliminal messages, I am ignorant of this, but Dr. Nedley presents much research into todays TV entertainment and how it puts you into a hypnotic state similar to someone meditating. By doing this everything you watch bypasses the frontal lobe, which is your brains "moral" center. It analyzes what you see or hear and decides whethere it is good or evil, to put it simply. If this is bypassed than the images going into your brain even if you tell yourself they are bad and just fake, your brain does not perceive this on a subconscios level. Very scary stuff! For humans to be entertained in todays age filmmakers have learned that they must change views at least every 5 seconds which in effect produces this hypnotic state. So you are really going to the movies to be hypnotized and allow whatever you see to pass freely into your brain without being filtered.