At one time he was every parent’s worst nightmare and conservative America’s quintessential example of what happens when you drink, take drugs and embrace a life of rock 'n' roll. Now, Ozzy Osbourne is embraced by mainstream America and even an icon of Americana, ‘The Today Show’ eagerly book interviews with the 62-year-old rock legend.

This morning (Oct. 13), the program did a full five-minute segment on Ozzy, complete with footage of him playing with his dogs, hanging in his home studio and showing off his first car, a new Ferrari, which he bought after recently getting a driver’s license -- the direct result, he said, of finally being sober.

Osbourne was on the show to promote his second book, ‘Trust Me, I’m Dr. Ozzy,’ a compilation of letters he’s written for a weekly newspaper and magazine column. His first book, 'I Am Ozzy,' was a New York Times best-seller.

“It started as a joke at first,” he said. “I survived the rock 'n' roll lifestyle and the drinking and the drugs and I learned to tell the tale. People along the way would say what’s this pill? What’s that pill? Is this any good for that? And I’d go, “Well, I’ve sampled quite a variety and so I think I thought it would be funny to do a spoof on that.”

During the interview with Jenna Bush Hager, Osbourne urged people to see their doctor if they have symptoms such as swollen lymph notes, discouraged fans from biting the head off anything and talked about how he convinced his wife and manager, Sharon, to see a doctor in time to successfully treat her colon cancer -- mainly because he’s a hypochondriac who frequently sees doctors.

“To see the woman that your married to go through these chemotherapies and stuff,” he said. “It’s like having a headache and getting a kick in the pants, you know. And she went through hell.”

Also, Ozzy discussed how is “sober but still crazy” and takes “a bunch of medications” to treat “hereditary Parkinsonian tremors.”

“For many years I was getting diagnosed wrong,” he said. “I spent fortunes, ‘cause I thought it was DTs [delirium tremens] from coming off the alcohol.”

Watch Ozzy Osbourne on the 'Today' Show