Heath's perfromance as the joker was not only completely believable ,but utterly terrrifying and unpredictable. Unlike the joker played by Jack Nicholison, Heath created a villian that you felt was a real sociopath. When i was watching it, i knew it was Heath ,but I couldn't believe it actually was him because he completely transformed into the joker.His mannerisms were chilling and the flim never failed to deliever to its hype. Out of all the movies i have ever seen. it is obvious that he gave this character his all and it's something no one has seen before. Heath left a legacy to remeber and a perfromance that will be talked about for years to come. Heath showed us that he was just getting started with his career and there is no doubt in my mind that "The Dark Knight" will blow everyone who watches it away , even people who aren't Heath Ledger fans. This movie was Heath's masterpiece and it is more than worthy of an ocsar. You HAVE to see this movie, it is incredible