To see the full range of YouTube videos all you need to do is login via the dvd/tv with your normal YouTube account. All of your favorite clips and channels will appear on the tv screen for quick access. This definitely looks like more fun than searching on cable for shows that repeat...
only after what Youtube can play without any socializing, SMTube is an excellent choice. It's had a rough ride, it never quite fully worked for me in my various distro reviews, but this new version is stable, robust and works well. At the very least, it's worth testing. Choo choo....