MySQL Cheat Sheet - Commonly used MySQL commands, all in one convenient HTML page.
Explaining TDD to a non-techie - Great way to explain Test Driven Development.
Programming Language Inventor or Serial Killer? - I’m really surprised (or perhaps frightened) at how wrong I was on this quiz.
Why’s (Poignant) Guide to Ruby - Yeah, this is an oldie, but a goodie. This is chapter 3, the best (and funniest) introduction I’ve seen to the Ruby programming language yet.
Five things you didn’t know you could do with Ruby - Includes things like “Process Satellite Images and Meteorological Data”. Not a lot of practical information, but interesting to see what people are using Ruby for.