Hi!
I do Zumba twice a week, I love dancing and Zumba was the only way to get me to go to the gym.
I agree, it is a lot of fun and I've been thinking about buying some videos to be able to do it at home as well. Our instructor incorporates resistance bands and some "Turbo Jam"/Kickboxing on Thursdays, she also keeps the class entertaining.
Let us know about the videos and enjoy your sweating!