Similar to previous except direct access, and flight planner function included with automatic airways routing, makes a long trip easier to plan. http://www1.duats.com
Although this is an Alaska based site, the links are very useful. Includes FARs, AIM, NOAA weather, NASA, NTSB, DUATS, etc. etc. Lots of good stuff. http://zorba.uafadm.alaska.edu/cap/general.html
Experimental Aircraft Association. For enthusiasts of home-built aircraft. http://www.eaa.org/