Muscle Confusion

[Shinobi]

I saw some things on the movie 300 about how the actors trained to get into such great shape, and they apparently used muscle confusion techniques in their daily training. I looked it up and found this. The link is to a website offering such a workout, with a full money back guarantee no less. I'm thinking about getting it to be honest. What say ye, men (and women :P)? Yay, or nay? (To the technique, AND the product offered... and please specify which you refer to in your reply :P)

http://www.beachbody.com/jump.jsp?it...EWAY&itemID=63

EDIT: click success stories on the right side and watch the video. It helps explain some things.