Great list, w3c Schools is an excellent interactive resource of information. I also occasionally visit www.coolhomepages.com and www.csselite.com for inspiration.
“Dynamic Drive” is a one of the best resource site for JavaScript and jQuery. There large collection of JavaScript and jQuery codes available in “Dynamic Drive”. www.dynamicdrive.com www.cssdrive.com
I love webpages that suck. It is super entertaining and really informative. By the way I always like going to http://css-tricks.com/. Chris Coyer is an awesome designer and he posts really useful articles and video tutorials. Lynda is also a great source, if you have the funds to pay for it.