some vids online
http://uk.youtube.com/watch?v=20TWHhMEA_c
http://uk.youtube.com/watch?v=IUcuyFurUTk
http://uk.youtube.com/watch?v=YP13KzVDl_A
http://uk.youtube.com/watch?v=IwSqj6IOjgI
http://uk.youtube.com/watch?v=OTymPIrB2vA