When I moved to Minneapolis, Uncle Hugo's was one of the first places I visited. I
walked all the way down from my Dinkytown neighborhood to visit it. It's a great place, but dammit, I couldn't find the copy of Benford's Matter's End I've spent the past four years looking for.
There's also TWO used bookstores, almost literally (no pun intended) right next to each other (separated only by a guitar shop) right where I live.