Jack Nicholson warned Heath Ledger about taking the role of the Joker.

Which is very odd to me. I never heard reports of Jack not liking the role, or it being overly physically demanding. He was 50+ years old when he was filming the movie, so I guess it could have been pretty draining for him. However Ledger was 27-28 years old when he was filming the movie. I wonder if Jack had a death scare while filming the Joker? Who knows, but I think its very interesting he would “Warn” Heath about the role.