Well, nothing much to see yet... but no doubt the footage will be compelling when it is eventually released.
Film-maker/explorer James Cameron has successfully navigated his tiny one-man submarine to the deepest part of the ocean floor, the Marianas Trench - 7 miles down. While he maintains the focus of the expedition has been entirely scientific, he has also been recording a lot of footage, and hopes to make repeat trips to this 'other planet'. Watch this space.
More here and here.