Bootcamp - The workout. Beginner through advanced reps to give you cardio, strength, and ab exercises all in one workout. No gym or equipment needed! Can easily be done in one room while catching up on the DVR. read as: no excuses!
Ballet Abs - I don't remember doing any of these separately (except for crunches) when I use to dance. I got my "ballet abs" by holding it in during class for 10 years; however, these exercises are great for anyone.
backonpointe: An arm workout that’s a bit harder! Make sure you use something sturdy, like a solid coffee table, for the inverted rows, and press your heels to the ground while in downward dog for a good stretch.
High Intensity Interval Training in the comfort of your home! Do the entire thing twice through, with a two-minute rest between sets, and push yourself hard during the non-marching sections. Great for dorm rooms!