seriousgames.org - An initiative for application of games in business training, education, public policy, and healthcare.
gamefly.com - Rent commercial video games. Why pay $50 a game when this is available?
unity3d.com - An up and coming game development tool described as "the Final Cut Pro of game authoring tools", this tool already exports games to Windows, Mac, the Wii console, and browsers.
atmosphir.com - A cool video game level making tool. It's free, and for Mac and PC.
slacker.com - Slacker Radio has some excellent online music stations. I stream their Alternative station and it seems to learn the kind of stuff I enjoy. They've got Android and iPhone apps too.
tomshardware.com - Great reviews on the latest and greatest computer hardware (motherboards, CPUs, video cards, etc.).
instructables.com - Turn your old graphing calculator into an Intervalometer to make time lapse videos with your digital SLR.
steamykitchen.com - A process of dry-brining to make less-expensive (cheap) steaks taste pretty good. It really works!
liveaquaria.com - Great deals on freshwater and marine fish, invertebrates, and aquarium supplies.
My Facebook page - Let's be friends :-Þ Mafia Wars anyone?
kayak.com - I hate overpaying for travel, and this searches for airfare deals on multiple search engines and travel websites.