The Joker - Heath Ledger
Even people who aren't major fans of the Batman franchise can agree that Heath Ledger is the best Joker in existence. He somehow perfectly captured the chaotic energy of the character, making him so realistic but outrageous at the same time. Ledger is only rivaled by Joaquin Phoenix, but they played two very different Jokers.
Jigsaw - Tobin Bell
Saw is one of the most involved horror movie franchises in history. They have countless films and remakes, which fans seem to eat up. At first, Jigsaw was simply this puppet, but as the movie progresses, we learn that there's a real human behind him, played by Tobin Bell. "Want to play a game?"