Grandmaster Moy Tung discusses Chum Kiu and how it relates to Siu Nim Tao. He also demonstrates Chum Kiu Sao (long bridge finger tip chi sao), Pak Sao, Lop Sau, Don Chi Sao, Luk Sao, Chi Sao techniques,  Tsui Ma, Jip Sao Jow Sao, etc... highly recommended.