Jack Osbourne opens up about having MS and his father's Parkinson's disease

Ozzy Osbourne's son, Jack, opens up to Dennis Miller about having MS and being 17 years sober. He also gives details about how his father's fight with Parkinson's disease. Plus, get a sneak peak at a new biography he produced about his father called "The Nine Lives of Ozzy Osbourne." Jack also talks about the scariest moment during his new season of "Portals to Hell," where Jack travels to find the unknown haunted areas of the world.