I just tried YouTube on my 8300 with 4.5.0.52 (rel75) and it works! Too cool! A bit laggy in spots, but for the most part, it just works. I figured an appropriate test would be the original Numa Numa song...
The video seemed to lag the audio a bit in parts, but it was hard to tell. Also, about half way in, the whole thing choked a bit momentarily. But for the most part, it worked - both "in player" mode and fullscreen.
I'm sure this will appear primitive down the road, but for now, it's pretty exciting...
- Jon