It's been five years since Michael Jackson died, yet his career is more alive than it has been in decades. Just last month, the singer moonwalked across a Las Vegas stage in a nationally televised hologram performance. A new album recently made its debut at No. 2 on the music charts. And a traveling Cirque du Soleil show based on Jackson's songs has logged nearly 500 performances worldwide. The result has been an estate that has earned more than $600 million since the King of Pop's untimely death at age 50.