A good website or dvd to learn tai chi?

My doctor said I should try doing tai chi for my jionts and muscles. Where could I learn some moves online or a dvd?

I have no teachers around here.

you'd be surprised how many teachers are around you but don't advertise.... it sounds silly but find an asian restaurant(not a take out, an actual restaurant and ask). it sounds stereotypical but it works every time i move. if they don't know, they know someone who does.

we found one by accident the first time. he did his form outside every Sunday with his wife and kids, people just joined in. just commit 4 moves to memory each week and you'll get it in no time. very relaxing.... mind clearing..... and as your doctor suggested, very good for your body because of the strength and breathing control you gain almost magically but obviously is in the movement of the form

Best advice I can give is - Don't

Learn from a real life teacher and not a book or movie, if you learn from a book you are just copying a movement.

If you learn from a teacher you can develop a understanding of how the move can effect you, if it can lead into another move, how to use it in a attack or defence, where to use it and how and also fix up faults in your body positioning, A book can't do that.

Edit - Walt B and Happy Bunny also give good advice on how to find a teacher. (A little bit strange in Happy Bunny's case but stranger things have happened and the unusually also work as well as the usual).

I agree with everyone else. There are many excellent videos out there but w/o someone pointing out important details and correcting your beginner mistakes, many of the benefits of a good tai chi practice will be lost. There is no substitute for a good teacher. Finding a teacher in your area should be easy. The phone book or a quick internet search will most likely give you a few options. Most gyms, community centers and YMCAs offer tai chi classes, but most practitioners would recommend an actual kung fu/ taichi school(provided that is an option)