I had a chance to visit the brand new "custom made", "eco-friendly", Monona Wal-Mart, which, like Cloverfield, seemed a bit overrated.
Some features that it flaunts is the under-store parking, to save valuable real estate (and the special escalators that hold shopping carts to get you there... although Ikea has had those forever), skylights to allow for more natural light... which is actually kinda nice, and freezer cases where the lights turn off when nobody is near by (memorial library stacks, anybody?).
My biggest complaint it was really cold. Probably because the underground parking wasn't heated, and there weren't many doors keeping the warm air in the store. Or they're trying to save energy.
But if you're a Wal-Mart fan, definitely better than the crappy old one on the west side of Madison.