Okay so it's n00b time.
Until a few days ago, the only Black Sabbath songs I'd ever heard were on Paranoid and 1992's Dehumanizer (with Dio). Seriously. I've always had a desire to get into their music, particularly this year when War Pigs became something of a signature song for my band, but for whatever reason I never got around to it. I listened to Heaven and Hell and Mob Rules first and enjoyed them as songs in the same vein as those from Dehumanizer.
Tonight, I listened to their eponymous first album and I just can't get over how awesome it is. I've always liked Paranoid but this absolutely blew it out of the water. I seriously wanted to sit down and learn every song on the album on the spot. It's so kickass!
I'm going to keep going through their discography and probably stopping after Sabotage.