Critic's Notebook: The Oscars' poor definition of 'best' means that quality films such as 'Skyfall,' 'The Dark Knight Rises,' 'The Avengers' and 'The Hunger Games' go overlooked.The members of the Academy of Motion Picture Arts and Sciences are always happy to acknowledge big action movies, franchise films and mega-hits — especially if there's a possibility they'll boost the ratings of the Oscars telecast and bring in the young folks.