Pixar is known as mainstream animation's saving grace, but all good things must come to an end. "Brave," the company's fifth feature-length release since being purchased by Disney in 2006, shows a more evolved strain of corporate influence hinted by last year's DOA "Cars" sequel. While visually polished and never painful to watch, "Brave" (which opens next Friday) tells an uninspired story of a rebellious princess inadvertently transforming her mother into a bear.