How Do You Get a Picture on Your TV?

I know: hit the power button on the remote (and I have figured that out), but that isn’t actually the question. Today’s Wall Street Journal has a good story (“Find It on the Web, Watch It on TV” ($ I assume)) on the growing market in devices to move content from the web to your television. Yes you can download Lost at iTunes, but do you really want to watch it on your iPod, especially if you have a new HDTV sitting in your family room? As television content unbundles and we all get to mix and match content from across the world, how do we get the content on our TVs?