A black metal cover of "American Pie" is the one I'm waiting to hear. Maybe Darkthrone would do it. Those guys are pretty funny.
MP3: Celtic Frost,
MP3: Dead Raven Choir,
Gavin Spearhead's Coversongs List. Exhaustive and exhausting; howsabout a search feature, Gavin?
Turnabout is fair play for Pat Boone