Jörgen Städje's Home on the Internet An all around very interesting personal website
Drew Olbrich A collection of personal projects
Vonslatt Lots of interesting articles
Cockeyed Lots of goofy articles, and plus some very insightful ones too
Eddie Matejowsky's home page A cool alternative Australian dude
The Burr Puzzle Site Lots about burr puzzles (I have built several from patterns on this site)
Ben Jackson's website Legos, rolling balls, and digital camera stuff. Fun!
Philip Greenspun's home page Full of himself but interesting reading.
Mike's electric stuff  High voltage and lots of cool stuff
Sam Barrows powerlabs Lots of dangerous high volage stuff
Don Klipstein's Web Site! Neons, LEDs and high voltage stuff
Digibarn Computer museum, lots of online stuff
The New England Rubbish Deconstruction Society (Junkyard Wars team)
Dr Dobb's journal - stuff for serious computer users
Slightly skeptical Open Source Software Educational Society
Bits about Graphics, plotters, 3D, etc. Fairly old but interesting
Larry McVoy's home page Nice homepage. I like the woodworking section.
Folklore.org Lots of stories of the development of the Mac at Apple.
NerdTV Robert Cringley's abandoned tv series (some old episodes)
Bard Litwin's website Artist, craftsman, etc. Makes cool machines
Digg - An even bigger waste of time than shashdot!
Reddit - Not ruined yet, it seems.
New York Times - Good reading.
Wired magazine Good quality nerd news
Videos of Lectures of Stanford ee380 class
Philip Greenspun's blog Insightful when he's not being a narrow minded republican
Recognia Stock chart pattern recognition. I know the CEO, hence the link.
Panacis Medical Develops innovative Mechanical and Electrical medical devices. Also know the CEO.
Fidus Systems Inc A good contract engineering firm - also know the CEO