Bookworm: There’s actually a Chinese restaurant in E”Y (with a Badatz Hechsher) that has the idol displayed in it. People just don’t know.
Tai Chi is Avodah Zarah. Most martial arts are based in Avodah Zarah though the forms of them left today are just artistic and combat moves and thus are probably not Assur.
Yoga is Avodah Zarah.
yungermanS: That’s a nice rant, though obviously meaningless L’ma’aseh. You should add to it that the Gematria of Dollar (Dalet Vav Lamed Reish)=240=Amalek.