TiVo plans to let users find and watch YouTube videos on their television sets later this year. The service will be available for customers with broadband-connected Series3 and TiVo HD boxes. I'm going to go out on a limb and guess that the lack of Series2 support means two things:

1. TiVo isn't really focusing on Series2 development much anymore
2. TiVo may be waiting for YouTube to officially roll out higher resolution videos before launching the service.

Anyone who's ever hooked up a computer to a TV set and tried to watch YouTube videos can tell you that they tend to look pretty crappy. While low resolution video might be good enough for a small window in your web browser, when you blow that same video up on a 27 inch or larger screen, it just looks like bunch of pixels. If TiVo plans to roll out YouTube video support on its HD-capable boxes, I can't imagine they'll want to do so before YouTube upgrades its video player.