Steve Irwin dead from a stingray barb in the heart.
I fully admit to loving watching this guy, he was, to me, infectious and very obviously loved his job. He embodies the truism that if you love what you do, you will be a success. Some may say he was a show-off who maybe took too many chances with his life, I believe he advocated for this planet's alpha-predators in a way that entertained sure, but more deeply, showed us that there was a place in nature for all creatures. Every living species has a reason to be. Even fire ants.