How and what do you exercise at home?

Finally I stopped going to the gym, even though the gym is still open in this area. (In Utsumoniya it is not included as emergency areas)
So I try doing exercise at home constantly.
I like this site, though it is in Japanese.

And when I go to the library, or drop by at a used bookstore, I borrow or buy some DVD or magazines with a companion DVD (is it right word?).

While watching the screen with music, I'm able to do exercise as the right way.
Only looking at books, I usually do short cuts to do exercise, or do very quickly.

Doing exercise with DVD is sometimes frustrating, but I do it devotedly.

What sites do you recommend ?