Workouts with bad knees


First off, congratulations to Daniel and Kelli for making the site such a success! Secondly, I would LOVE some input on making or finding exercises on this site for someone with bad knees. I know about the "Easy on the Knees" cardio video but there's only so many times I can do that without going nuts between the repetition and lack of challenge. Neither kneeling nor jumping is a good idea, so if anyone has any ideas...