Ozzy Osbourne has somehow made it through decades of drink, drugs and debauchery - not to mention jail, life-threatening accidents and Parkinson's disease - but is now preparing to perform for devoted fans one last time.
Black Sabbath made an indelible mark on music by forging the sound that became known as heavy metal - and on top of that, Ozzy practically invented the image of the wild rock star.
Swigging, snorting and shagging his way around the globe in a semi-conscious daze in the 1970s, 80s and 90s, he ensured his place in the rock 'n' roll hall of infamy by biting the heads off some poor unsuspecting creatures along the way.
Then in the 2000s, he and his family were catapulted to a new form of fame when they unwittingly pioneered reality TV as cameras captured the foul-mouthed (but affectionate) dysfunction of their home life.
The "Prince of Darkness" has threatened to retire before - but with health problems taking an increasing toll, Saturday's farewell gig really does look like being his swansong.



