As expected, ABC has launched a new site offering free, ad-supported streaming episodes of popular TV shows, including everyone's favorite, Lost.

The UI, including the video itself, is all Flash. On one hand, that means the "pre-show" interface is pretty slick, but the downside is that you can't watch the videos in full-screen mode! The quality of the videos is actually pretty good though.

This is supposed to be an initial test-drive that's going to last until the end of June. There are no details about future plans yet. I'm not sure how popular this is going to be without the ability to watch the episodes in full-screen, but considering the fact that it's the first time something like this is being offered, it's a good start. For now, I'll just stick to using my DVR. :)