http://www.youtube.com/watch?v=pR3lCY_oIuU
They do a couple of Black Sabbath songs, and the treatment is always the same -- typical Cardigans arrangement, with Nina Persson's vocals front and center and sounding so precise in her pronunciation that she sounds more British than Ozzy, even though she's less. Much less. She isn't, he is, that much less.
But this one has always been my favourite. Mostly because they replace "You bastards" with that little disco-y thing. But also because "Iron Man" is so much more played out.