Toonami Reactor 2.5 isn't the only YouTube-related project I've worked on. The first was a YouTube "Let's Play" viewer that automatically runs through a playlist of videos. Basically, I hook a laptop up to a TV with a VGA connection (many new HDTVs have them), select someone's playlist, and just let it roll.
Many improvements made in either the YouTube Viewer or Reactor 2.5 are cross-pollinated, so that both function better. It is essentially a prototype for experimenting with YouTube embedding and managing playlists without worrying about frames or extraneous HTML and JavaScript files.
The YouTube Viewer currently has a few experimental features such as measuring download rate to ensure videos load quickly. I plan to add a voice synthesizer to read video titles and descriptions, but it will have to be an external program on the viewer's computer. Any sort of voice synth plug-in will simply be too slow or too simplistic (not enough voices, etc.).
Of course, now I'm working on a "master" YouTube Viewer. The current one is okay, but I'm trying to make one embeddable in any webpage with minimal hassle, rather than hard coded as it is now. If it all works out, I might be able to get rid of the frames in Reactor 2.5.
I've also got a JavaScript file that parses and threads comments from YouTube discussions, but I'm still cleaning that one up.
P.S. A bunch of new shows have been added to Reactor 2.5 (WS). Some of these took a bit of work as not all were in playlists (and one playlist was completely misordered).