What are your favorite work out DVDs and why?

RiseAndConverge

I'm doing all of my exercising at home for the time being and using Power90. I know myself, however, and know that I will get bored with the same work out everyday. I would love to hear from you:

1. What your favorite work out dvd is
2. Why you like it
3. If it's rough on the knees

Thanks so much!

Spanaval

I have 6 Bob Harper DVDs. I've done all but one, and like them all. I especially like his Pure Burn Super Strength and Totally Ripped Abs. Pretty much all his workouts seem to be total body workouts, lots of compound moves, they bring my heart rate up, and there is no/little jumping around, which I cannot do (bad feet). Wipes me out, in a really good way.

I can see his workouts being hard on the knees, because there are lots of squats and lunges, usually.