I respect Dio a lot more than I do Ozzy, but there was so much classic music during the Ozzy era of Sabbath that I can't vote for anyone else. Ozzy.
10/24 - Pallbearer
11/01 - Suffocation
11/30 - Devin Townsend
12/06 - Distant Worlds: the Music of Final Fantasy
03/07 - Video Games Live