Nintendo think that Metroid: Other M, being developed by Team Ninja, is the most cinematic Metroid game ever developed. We can't argue otherwise on the strength of trailers like this.
It's a short cinematic sequence from the opening of the game, showing the "birth of Samus". Long-time fans may baulk at the extra flesh Team Ninja is adding to the normally sparse Metroid universe, but I'm intrigued. Team Ninja is a new developer to the series, and if they want to try something different, more power to them.
UPDATE: And here's some gameplay!