I'm an at home exerciser, and I mostly do workout videos. I usually rotate my collection, so I don't get sick of any videos, but I decided to check some out from the library, too.
I tried Cardio Dance Fusion this morning, and it kicked my butt. I have never worked so hard doing a dance exercise video. Even the instructor was out of breath. It says on the cover "Visible results in 10 workouts guaranteed" and I believe it. It was one of those where you just can't slack off, unless you stop doing the video altogether. I'd recommend this if you do workout videos.