realness in advertisement

Resontly when i was going on my msn, i saw a friend of mine has his name saying" go support my Vodafone advertisement http://www.youtube.com/watch?v=TCLxh8v_W-4 "; as he plays one of the dancer in the ad. The advertisement consist of lots of popping techniques while features various dancers from different age group , nationality. Since i am a very good friend of his i ask him" when do you learn to dance like that?", and he told me that he simply need to do the dance movement; while all "popping" action is done by computer modified effects. Brings me the question of the modelity within advertisement, as dancer often needs years of time to master the moves, with the help of computer animate; it only takes 1 hour of training for my friend to do the action. As realising in what the effects can do to make the dancer look so strong on their popping action, makes me think the professionalism within the model use on television; again maybe their job is just to look good.