websites to just die for!

http://www.webenglishteacher.com/

http://www.edusolution.com/

http://www.princetonol.com/groups/iad/lessons/high/highlessons.html - it's about art, but it's the BEST site and many of the projects can be used in English classes

http://www.youth.net/cec/ceclang/ceclang-high.html

http://www.col-ed.org/cur/lang.html