Heath Ledger felt “smug” about his work on Batman movie ‘The Dark Knight’, according to fellow actor Andrew Garfield. The tragic star played the Joker in the superhero movie opposite Christian Bale as the Caped Crusader but died from a prescription drug overdose In January 2008 before it was released and he went on to win a posthumous Oscar for Best Supporting Actor for his performance – and now Garfield has revealed Ledger was immensely proud of the project. Speaking on the ‘Happy Sad Confused’ podcast, Garfield revealed they met shortly after filming wrapped on ‘The Dark Knight’. Garfield sa…