The Guess Who is a cool band, but sorry No sugar tonight. I voted for Black Sabbath.
Ozzy is a disturbed individual. I once saw him hang a midget in concert during "Goodbye to Romance" (solo, Diary of a Madman tour) I somehow find that amusing. lol.
There is no doubt that he has his place in rock history and was a driving force behind Sabbath. That being said, I disagree with Mookie when he says this:
Sabbath essentially died in 1977 when Ozzy left but the name sold so they kept touring with different singers and musicians for many years to come.
Heaven and Hell was this first album without Ozzy. Ronnie James Dio (Rainbow, Dio, Elf) replaced him and put his own mark on the band. That probably is my favorite Sabbath album. Then I'd say it goes Sabbath Bloody Sabbath, Master or Reality, and Vol 4.
"The world is filled with Kings and Queens,
Who blind your eyes and steal your dreams
It's Heaven and Hell"