Just want to share a couple of more videos.
This one is a compilation of demos and two man training. Sigung Chiu Luen is in the beginning sitting on stage.
http://www.youtube.com/watch?v=4uTkI8UGfJo
Mantis Exits Cave
http://www.youtube.com/watch?v=og2qCXtE3a4
Whirling Step
http://www.youtube.com/watch?v=5pndyiE9l-4