As a shark fanatic (thanks, Jaws), I was excited to see The Shallows. When I first saw the trailer, I thought the concept--more 127 Hours than Jaws--was interesting: A single person, alone on a rock, trapped a mere 100 or so yards offshore, in shark-infested waters. Most shark movies follow the Jaws formula to a T: Shark attacks a bather, someone in position of authority decides something must be done and the beaches should be closed, someone of higher authority thwarts that attempt, more people die, our hero finally has to confront the monster. But The Shallows produced a new and fresh...