I LOVE Strike Zone! It was the absolute best kickbox workout I've ever done - and that's saying a lot because I don't like kickboxing very much. I keep trying to find one that I like... and THIS IS IT!!! I really enjoy the combos - they're different from other kickboxing workouts and really keep me moving. Josef's pointers for adding power to the moves are great! I did it for the first time this weekend and would consider it intermediate level in intensity. But once I learn it and can incorporate Josef's pointers, I expect the intensity will increase quite a bit. Oh, and the music is fabulous!