I just discovered an extraordinary t'ai chi artist or warrior or dancer (or all three), Sifu (or master) Cheung Kwok Wha. He's doing a form I haven't seen, Needles in Cotton, or Pak Hok Pai.
I believe its roots are in ancient Tibet. Anyways, Sifu Cheung's movements are so precise, so centered, so ... exquisite.
I watched him performing the form straight through barely breathing.
Click on the highlighted part, and enjoy!