Here are some of my favorite links.
The Flying Spaghetti Monster - This is where His Pastaness, the FSM, was originally created
The One Ring - Awesome Tolkien fan site, with the best message board around!
Space.com - Loads of fascinating articles and gorgeous pictures!
Bad Astronomy - Phil Plait examines instances of "bad astronomy" in movies, news, educational materials, and more
Computer Stupidities - A huge collection of stupid computer stories (READ: stupid users), with a fair sprinkling of stupid techs and salesmen
Tech Support Comedy - A central gathering place for computer-related tech support people, who post horrific stories of user stupidities which are really very funny
Ubuntu Linux Forums - The user-driven support forums for Ubuntu Linux. Lots of helpful people here
User Friendly - A truly hilarious webcomic for computer geeks, updated every day.