I have posted a video of an interview with Grandmaster William C. C. Chen and a demonstration of his Yang short form, taped in 1975. It is a vintage black and white video I took when I studied with him. It is beautiful in its simplicity. This is the first time this video has been made available. Presented in three parts on youtube. Here is the link to the first part:
http://www.youtube.com/watch?v=x6hi_ffahsU