I was thinking about this lately; I would like to hear the current Iron Maiden crew play Lochness by Judas Priest. They would do a pretty good job I bet. I love the singing on it, kinda old European or Russian, and its based on music.
I would like to hear them play Master Of Puppets by Metallica (like that's EVER gonna happen!) but imagine it with 3 guitars and Bruce's amazing vocals!!!