The Klutz Yo-Yo Book (Klutz S.), sometimes it gets so boring, I forget how to do basic tricks.
There are only three books I reread each year Technical Analysis of Stock Trends by Edwards and Magee originally written in 1940's and two books by John Hill written in late 70's, Stock & Commodity Market Trend Trading by Advanced Technical Analysis and Scientific Interpretation of Barcharts. As years go by, I understand something different.