I'll put in for Peter Milligan, just for his Dark Knight, Dark City arc. It's become something of a classic, but not a major one. His run on Detective Comics was okay as well, there was some good stuff in there (I recently reread the trade.). Other runs and creators that I find to be underrated are Archie Goodwin (He had sone classic stuff, but he's not mentioned in the same breath as Miller, Morrison, O'Neill, etc.), Gerry Conway, and Anderson Gabyrich (I might be spelling it wrong. He was the highlight of that AWFUL Era!). Those are all that I can think of now, but I'm sure that I can think of more later. What say you guys?