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http://www.theopencd.org
This website has the iso for a CD with lots of really great software. Did I mention that it is all open source and therefore free.
http://frozencpu.com
If you want to hotrod your computer, this is definatly the place to go and find out whats out there.
http://www.wikipedia.org
Wikipedia is a free content wiki encyclopedia being written collaboratively by contributors from around the world. Anyone can edit every Wikipedia article except for a few protected pages.
http://www.backpackgeartest.org
BackpackGearTest.org is a site where backpackers evaluate new gear in the field over a six month testing period. We report to BackpackGearTest.org in a setting that encourages discussion.
http://www.digitallyimported.com/
Digitally Imported is a great source for streaming techno internet radio. They also have a few other channels like jazz and what not. But their main service is anything techno.
http://www.deviantart.com
Deviant art is a website that has many art forms submitted by regular people. However the bar doesn't seem to hover around the "I suck as an artist," but more around the "I'm pretty good." As a warning, there is mature content on this site. There doesn't seem to be much in the way of censuring. It is mostly clean though.