I'm not sure if you've seen these ones before that they look pretty good:

http://www.exercisetv.tv/ (like exercise dvds but in the comfort of your...office!)

Lots of good reference: http://www.shapefit.com/

Quite informative: http://www.weightlossforall.com/

Good for girls: http://www.fitsugar.com/ & http://www.womenshealthmag.com/

Just thought I'd share my faves!