Discovered while paring down browser bookmarks:

Wireless tower locator - enter your city/state and get maps & info on all of the FCC registered towers in the area. Not sure why you'd want to do this but here it is all the same.
New Hampshire's new Coho Trail - ultimately it will be a 159 mile long trail and so far 140 miles of trail are open. My favorite listed feature is "a natural, bubbling jacuzzi" although I haven't discovered the location yet.
My sister's family - the Normal Normans three years ago.
USGS GNIS datasets - control your excitement...
http://www.directionsmag.com/ - lots of geographic data, interesting maps, as well as some useful articles.
Shuttle-bike kit - turn your bike into a waterbike.
Dr. P's dog training - THE Dog Library
Model Stirling Engines - including the rather curious seesaw stirling.
LedLight.com - between these and the new compact flourescents rebates you shouldn't ever buy another incandesant bulb.
Onset data loggers - uh, because, uh, well, you want more data
Radiantec - article on hybrid solar heating feeding a radiant heat system