Algunos links para ver videos...

http://www.youtube.com/watch?v=MpD2Gn718tI
 
http://www.youtube.com/watch?v=HMsz5zq9aUw
 
http://www.youtube.com/watch?v=YuAJ2tzlwEQ
 
http://www.youtube.com/watch?v=QE4I96GjTj4
 
http://www.youtube.com/watch?v=2AxfWUgLbdQ
 
http://www.youtube.com/watch?v=qOrkDKFbK1Y