My all-time favorite is Tortoise. It's so strength-oriented and very up-to-date on current, effective moves. I have the Tortoise and the Hare workouts, and I love them. TheTortoise has the longest aerobic section of any FIRM video (38 minutes), but none of it is high impact. It's all step aerobics (ballroom dance steps on a very short box -- 4"0), barbell and dumbell work, and standing leg work. Lots of tall box leg presses, squats, lunges and dips. Really tough leg and arm work...I'm usually dying at the end of this workout. The push-up section is killer! Abs are pretty intense as well.

Roberta Kagno