In the Hitchhiker's Guide to the Galaxy series, the most indispensible form of technology is the Hitchhiker's Guide itself, a pocket computer containing information (some of it wildly inaccurate) about every place in the galaxy. Now the good people at Instructables have a posted a cool project that lets you create your very own Guide — just get crappy old handheld PC, stick Linux on it, and fill it entirely with Wikipedia. Presto, your own somewhat-inaccurate computerized guide to everything in the galaxy. Don't forget your towel! [Instructables via Hackaday]
I used to be a fan of h2g2.com, but they reworked it into a run-of-the-mill social site. As soon as you could post comments on articles without having to write your own article the quality of the writing (and the caliber of lunacy) went downhill. It's still running, and I browse the archives occasionally, but it's not as much fun as it was when it launched.