As a fan of kung fu movies, I enjoyed this trip through the ages of kung fu movies. Yeah, the title would have you believe the documentary is about action films in general, but it's not. It would have you believe it's about martial arts films in general, but - as before - it's not. They're really just focused on the kung fu movies that came out of Hong Kong, and other films influenced from those.
The film is "hosted" by Samuel L. Jackson, but I sure don't know why. He doesn't have the credentials to lend anything to the narration. And his taped narrative segments were awkward, read from a teleprompter, and distractingly shot by someone with an infatuation with gratuitous camera movement. The production company could've saved a lot of money by hiring a film historian to just narrate from a static angle or all in voice-over.
This film was a gift from a friend who found it in the bargain bin at the video store for $3, so I guess it's worth that. But don't pay $20 for it. I'll give it a 4 out of 10.