dude, even if you're not necessarily a fan of the band, its still a good song (IMO), and its not that hard to play(which is why I suggested it)
if nothing else, you could
A) take non metal songs and metalize them
OR
B) do like what I do with Peace Sells, and change it around a little . You can do it with songs you like, songs you don't like so you like them more. Its kinda like the Grateful Dead, they have a basic structure for a song, but play it different everytime.... you are the one playing the guitar after all. And as long as you think its cool, who cares?