Cloverdale School Library - http://fc.bcps.k12.va.us/~slarose/
This is a link from the Elementary school I went to as a child. They were gracious enough to add our link to their site.
UpToTen - http://www.kidsites.org/
This site has a ton of great links for kids. They cover all the different ages with a different category section for each. She has done a good job of documenting all of her sites.
DotNetNuke - http://www.dotnetnuke.com/
This site is built using DotNetNuke and we are very happy with our decision. The software has a huge user base and is improving every day. Check it out at the link above.
HCI Bibliography : http://www.hcibib.org/
Human-Computer Interaction Resources