I have the video set and you would be surprised how hard it is at first.
I like the swimming dragon for my neck and shoulder and I can do it with out watching my video, I double dare you to give it a try. The second Video is the video set I got about three years ago..
YouTube - ‪T'ai Chi Daily Practice DVD by Gaiam‬‏
YouTube - ‪Qigong Chinese Healing Art‬‏