>>4364
You're right, the "explosion" of what you call basic metalhead bitches getting damp over metal covers of pop or rock songs pretty much happened 10 years ago, I think it was because Children of Bodom released that Britney Spears cover.
Out of the bands I know, I know that Blind Guardian did covers of The Beach Boys back in the late 80s, Angra did a cover of Kate Bush in '93, Voivod did a cover of Pink Floyd in '89 and Sanctuary did a cover of Jefferson Airplane in '87. There's many more, but those are the ones I could think of and they were actually pretty good and didn't even really feel gimmicky in comparison to today's metal bands (except for Blind Guardian's cover of Barbara Ann which was atrocious) who just do it because it's "cool" and "hip" and "ironic".