I would have to agree with PhyllisG, Meta Omni was/is very challenging. Everything she does is challenging. In addition to the results mentioned above I'll add specifically, wrist strength, back strength, and core strength, above all though I think it was balance (& posture) that improved the most. She has a way of getting you to completely focus on one thing and being conscious of what you are doing. It has had a positive effect on everything I have done since.
If you are new to Tracy, the new mat & cardio dance beginner workouts are a good start, you may get the gist of what her method is like with those. There are also numerous youtube videos as well. IIRC, the youtube Ironman 2 Workout A & B were good ones.