Book ending instead of film ending? Spoilers.
I thought the book ending was better.
Hooper is in the shark cage and screwing around with the shark as it passes by him instead of killing it with the power-head, until the shark rams the cage and kills him. Brody shoots at the shark as it breaks the surface with Hooper's corpse in its mouth, but misses the shark and shoots Hooper instead.
The next day the shark kills Quint and then expires from the harpoons in its body as it approaches Brody. Brody swims to shore on a flotation cushion.