Have a youngling — or younglings — to whom you'd like to impart a bit of your geeky ways? Let Geek Dad ($12) be your guide. Written by Ken Denmead, engineer and editor of Wired's GeekDad blog, this 240-page tome is a collection of geeky projects and activities you can do with your little ones, like launching a video camera with balloons, creating a comic strip, making geeky crafts, and constructing the "Best Slip n' Slide Ever." Just remember: these are projects for you to share with your kids, not for you to tinker with yourself out in the garage.
Okay, maybe they won't literally cause unexpected bowel movements, but "Facts that Will Greatly Disturb You" just didn't have the same ring to it. 1,001 Facts that Will Scare the Sh*t Out of You ($10) is a 300+ page collection of random facts about bugs, disease, animals, and more, each one properly sourced — should you actually want to know more about it — and accompanied by a witty one-liner. Obviously a great bathroom reader, it works equally well for coffee tables, waiting rooms, and light mid-air entertainment.