AirNav --"...provides free access to FAA data on airports and navigational aids". Paulo Santos' masterpiece.
AOPA -- Great weather links. Great spelling. I dind't know that the FAA offered remedial braining. AOPA membership required
AVweb --"The Internet's Aviation Magazine". Great site; if only they could fix the 'new' feature. membership is free but is required
Landings -- "...The Busiest Aviation Hub in Cyberspace". Still pretty fast, though.