http://labs.adobe.com/downloads/flashplayer10.htmlOM NOM NOM NOM
I just watched a 1080p vid on YouTube (though probably really low bitrate) without drops in any frames. This is off a system that is equipped with a AMD 1.8GHz Venice... which is like 6 years old. The GPU Acceleration is being offloaded to my 8800GT.
It seems to be speeding up other flash related shit too, like flash based page ads and video on Hulu (which wouldn't slow my system to a crawl but would still effect its speed). Feels good man.
Just make sure you're using a Video Card that allows for Hardware Acceleration and updated drivers (NVidia mostly, don't know about ATi... apparently they have driver issues at the moment?)