I'm gonna go with The X Factor by Iron Maiden, though The Mob Rules by Black Sabbath is up there too. I've always felt that people are far too harsh on Blaze Bayley (from The X Factor), and everyone is always up in arms on the fact that Iron Maiden changed their styles a bit while he was in the line-up. In fact, the only argument I've ever heard against the Bayley-era albums is that "it's not Maiden!". Well damn right it's not. If Steve Harris had tried to stick to the old formula used with Bruce, Bayley would have been out of the band way before Virtual XI was even conceived, and Iron Maiden would likely have retired in about 1997. And then we wouldn't have the Somewhere Back in Time tour. That's my two cents. What albums do you guys think are underrated?