Michael Jackson, the "King of Pop" who once moonwalked above the music world, died Thursday as he prepared for a comeback bid to vanquish nightmare years of sexual scandal and financial calamity. He was 50. Jackson died at UCLA Medical Center after being stricken at his rented home in Holmby Hills. Paramedics tried to resuscitate him at his home for nearly three-quarters of an hour, then rushed him to the hospital, where doctors continued to work on him. "It is believed he suffered cardiac arrest in his home.