 Oscar-winning producer John Landau has died. He is best known for being James Cameron's right-hand man on blockbusters Titanic and Avatar. Together, the pair accounted for some of the biggest blockbusters in movie history. Landau was 63. This is CBS News. Sponsored by Progressive Insurance. Get renter's insurance to protect the things that make your place a home, including coverage for theft or damage. Visit progressive.com.