I been doing crossfit style workouts for over one year now after "body building" for 14 years. I would never go back to conventional body building. I challenge any body builder out there to try and survive a crossfit met-con workout like the one in the vid. It will make you realize how useless those muscles that look so pretty in the mirror actually are.
I can go on about this all day... but to make a long story short, if you only want to look pretty in the mirror or on stage, stick with body building. If you only want to lift a ton of weight, stick with power lifting. If you want to run a marathon, keep on runnin'. BUT, if you want to have a respecable deadlift, squat, press, 10k time, 5k time, 100m time, 400m time etc. etc.... basically if you want to be an all around better athlete with improved performace in REAL sports, try Crossfit