I had to watch it a few times before I got it. Maybe thats why I like it so much. FOr me, the more choreographed the better. (Not that I don't have those days when I like something strong, simple and to the point. ON those days I often fo Reebok...)
Funny--my mess up move would have to be the triple steps turning going around the step (the other posters favorite!). Every now and again I just get on the wrong foot.