The title says it all. No matter what you think about his (admittedly bizarre) personal life, he was an absolute entertainment phenomenon. There will never be another entertainer like him. Thriller will always be one of my most prized albums in my collection of vinyl.
With this and the death of Ed McMahon and Farrah Fawcett, this has turned out to be a hell of a depressing week. It can't end soon enough.