I still like to think that Heath Ledger was the best Joker of all. Did he dive too deep into his role of The Joker? Maybe... Personally, I believe that like a lot of everyday people, Heath just plain and simple let drugs get the best of him. Is it by chance that after acting as The Joker that Heath couldn't sleep at night? After his death, there were plenty of rumors that The Joker killed him. People hinted that after playing his role as The Joker, that he couldn't shake this character from his head. The scary part of this is: Can a fictional psychic power really take over someone? That will always be a question to haunt us.