The Ozzman Cometh
This best-of collection is notable for the inclusion of two Black Sabbath demos, "Black Sabbath" and "War Pigs," which have slightly different lyrics and lead guitar parts. As such, The Ozzman Cometh offers precious little to completists but is an excellent introduction to Ozzy's solo material for the newcomer. Also of note is a live version of "Paranoid" with Randy Rhoads in full-on shredder mode. Rhoads sounds really good on this one.