I love THe Firm workouts. You get cardio and weights all in one. They're kinda long (45min-60 min) but you get a lot done and you can really see your body change when you stick with them.
I love the Bar Method Dvds - you are actually sore after doing them.
I just bought and ADORE the Shiva Rea Yoga Shakti DVD. It includes four yoga workouts of differing abilities (and I've been doing yoga for 4 years and found two of the workouts legitimately challenging) and there is this great feature that allows you to select different aspects of all the different sequences to create your own practice. It's great if you practice yoga already - I'm not sure there is enough guidance for a true newbie, but it is great!
I gotta say I really like my PUSH DVDs. And who doesn't love Bob Harper (from the Biggest Loser) as your trainer. They really work and can we talk about the sweat I work up?? Thank god I am in my own home! I'm sore the next day. That's how I know they work.
I like the *old* Winsor pilates. I have the FIRM series and it is hard, well for me it is. Lately I've been doing more yoga, but I can't remember who it is right now. I'm getting ready to add some Tai Chi to my library - hopefully it will work out.
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Curve: The loveliest distance between two points. ~Mae West