Looking for a good site that provides strength exercises...any suggestions?

I’d like to find a clean, easy-to-navigate site with lots of exercises for both free weights and machines broken down by muscle group, so I can mix up my strength routine every so often.

All I can seem to find are crappy sites that look like they were created circa 1995 (i.e. http://www2.gsu.edu/~wwwfit/lowerbod.html) or ones that are filled with crappy ads (i.e. http://www.strongshape.com/strength-training-exercises.html).