For people, like myself, that love science fiction and reading, and just happen to live in the Denver, Colorado area you are treated to a large book sale twice a year. And when I say big, I mean big. I have been there three times and each and every time it is held at the Jefferson County Fair Grounds in a large auditorium whose floors are filled from front door to back door with books. The best part is that on Sunday, the last day of this three day sale, books are sold at $5 a bag.

More info here.