After some quick research, I found two things:

First, we don’t get Discovery HD Theater in our area by default. That’s something you have to special request.

Second, it costs like $5 - $20 a month. It’s a subscription service, not just another cable channel!

Now, I enjoy my Trading Spaces as much as the next guy, but if I’m going to be paying $20 a month for a channel, it’d best have some boobs on it. And I don’t mean the scary native ones you see in National Geographic.