Gil's link of the day!
http://www.g-cans.jp/intro/07photo/index.html Amazing photos of the giant underground storm sewer system in Tokyo.
http://sandhogproject.com/whatis/whatis.html A page about the sandhogs, miners who work deep underneat Manhattan.
http://itreviews.blogspot.com/2006/05/linuxs-boot-process-explained.html An explanation of the linux boot process.
http://www.roughlydrafted.com/Oct05.5Flaws.html Five architectural flaws in Windows solved in MacOS X.