http://www.goodfonts.org/ - Fonts

http://www.dafont.com/ - More fonts

http://returnofdesign.com/colors/ - Color schemes

http://www.csszengarden.com/ - CSS info

http://www.mezzoblue.com/zengarden/resources/ - Some more CSS stuff

A lot of you probably already know of some of these, but they're great sites and a good aid for designers.