Check out these videos:

http://www.youtube.com/watch?v=aPbQZnTcWc4&feature=plcp

http://www.youtube.com/watch?v=OkvkJSGkUOw&feature=plcp

http://www.youtube.com/watch?v=JVIu99udiOg&feature=plcp

http://www.youtube.com/watch?v=EknLjFwvbJU&feature=plcp

http://www.youtube.com/watch?v=dz7acr16y1c&feature=plcp