Christopher Nolan's brilliant "Dark Knight" — the second film in his Batman trilogy, all starring Christian Bale (a best actor nominee Tuesday for "Vice") — would garner a posthumous supporting actor Oscar for Heath Ledger. But that superhero movie's infamous passing over for best picture nominees like "The Reader" is one of the reasons often cited for why the industry increased the number of nominees in the category from five to 10 (before settling on the current range of five best picture nominees minimum and 10 maximum).