Black Sabbath - self titled lp

I've listend to three Sabbath albums today already and it's not even lunch time. You can't beat them - super doom-laden riffs without the obscene fret-wankery of any of the 'heavy metal' they spawned in their wake. I'm especially fond of the 'Sabbath Bloody Sabbath' lp - not popular with the real fans apparently as it flirts with prog but maybe that's why I like it!