My favorite/best actors of all time are: Jim Carrey, William DeFoe (especially in a shadow of a vampire), Anthony Hopkins, Heath Ledger (in Dark Night), probably some more I am forgetting atm.
He did an amazing job for Nolan's vision of Joker, but it didn't have that level of evil that we associate with Joker. Batman is driven by purpose and Joker is supposed to be his complete foil - chaotic. Ledger's Joker, while acted well for its writing, still seemed driven by purpose instead of chaos. That rant being said, here are my favorite overlooked movies by genre Horror: Let the Right One In Comedy: Johnny Dangerously Drama: 13 Assassins Action: District 13 Sci-Fi: The Machine Animated: The Animatrix
Some of those names seems familiar. A movie often looked over is Rocky. Just kidding, but a great movie none the less.