Workrave is a program that assists in the recovery and prevention of Repetitive Strain Injury. The program alerts you to take micro-pauses, rest breaks and restricts you to your daily limit. It runs on Linux and Windows, with source code also available.
Virtual PC Guy is a member of the Microsoft Virtual PC team, who spends his time installing weird and wonderful operating systems. His blog, complete with installation guides and screenshots, makes for an interesting read for anyone who longs for the “good old days”.