A low-budget creature movie that turns out to be a blast. William Girdler directed Grizzly, which was written by Harvey Flaxman & David Sheldon and stars Christopher George, Andrew Prine & Richard Jaeckel. The story involves a giant grizzly bear attacking campers and hikers in a state park. The lead park ranger tries to trap and kill the animal but faces opposition from his boss and is frustrated by the arrival of…