Tivo and YouTube came to an agreement to allow videos from YouTube to be accessed from your Tivo DVR and played right on your tv.  All those users who have a Tivo Series3 DVR or better, (hd included) will get Youtube content directly on their Tivo box.

YouTube on your Tivo will allow users to browse, search, and even access youtube channels and playlists.  This may just be the first step for experiencing Youtube fully on your television.