Greg Ketter's Dreamhaven Books is one of the best genre bookstores in America, and Greg is a hell of a good guy. I've only been in Minneapolis once, so I've only been to Dreamhaven once, though I was very impressed, and walked out with a gorgeous set of the Phoenix House editions of The Cornelius Quartet and A Cornelius Calendar. But I see Greg at conventions all the time.
Via Neil Gaiman's blog, I've just learned that Dreamhaven had a break-in, which not only took some cash but did some real property damage. They are really hurting right now, so buying a book or two off them could really help. They could use the love.