http://sysadvent.blogspot.com/2010/12/day-15-down-ls-rabbit-hole.html Tracing the steps needed to run ls.
http://www.debian-administration.org/article/Recovering_deleted_images_from_flash_cards Photorec can help you recover deleted or damaged photos off a digital camera memory card.
http://geektechnique.org/projectlab/781/slurpr-the-mother-of-all-wardrive-boxes Homemade project to leech from multiple open wireless networks for a faster connection.
http://video.google.com/videoplay?docid=7707585592627775409# A documentary on the Open Source movement.
5/18/07 Gil's LotD
http://wikipediafs.sourceforge.net/ Read and edit Wikipedia as a filesystem! For Linux, of course.
http://www.psstpassiton.com/ Different teams work on designing and creating the same film in separate steps.
http://www.fakeisthenewreal.org/subway/ Subways all drawn to the same scale, very cool.
4/12/07 Gil's LotD
The worst April Fools jokes.
Tips on power napping.
How to get Knoppix installed on a USB key. Cool beans.
http://www.extremetech.com/article2/0,1697,2102559,00.asp Using Google Earth to study data from the US Census.
http://ubuntuforums.org/showthread.php?t=376283 A guide to setting up Ubuntu as a wireless router, but should work for most distros and systems with a bit of tweaking.