Just picked up an Apple composite video cable for my iTouch at Best Buy for $25.99. It lists for $50 on the Apple website and the Best Buy in my neighborhood had it on clearance for $30. But when I went to the register it rang up for $25.99. It comes with a USB power adapter as well.
This is a really good deal if you want to watch video from iTunes and don't have the means to stream to TV. The video quality is excellent on my plain old TV set. The only caveat is that you can only watch downloaded video or YouTube video (via the YouTube app). You can't see the user interface on the TV nor can you play any games or run other apps using the TV (bummer).