Ozzy Osbourne

See a photo gallery of famous rockers who all have grandkids.

Revisit his incredible career with more than 60 shots.

Back then, Jim Simpson said the future metal icon was "never very confident in what he could do."

Ozzy Osbourne had a tumor removed from his spine after going under the knife for a fourth time.

He shares more about his health struggles as well.

"F--- you if you don't realize that somebody really deserves to be here."

But Jack says one-off's are not out of the question.

Take a trip back through metal history…

Among the living.

Its origins are centuries old.