Seems to require FF4 (WebGL-enabled Chrome pops up error messages).
IE9 is looking pretty dated at this point. 2D acceleration when the competition is doing this?
Just some retrospective: Microsoft introduced DirectAnimation in IE4, which can do JScript/VBScript based hardware accelerated animation. They abandoned it in IE7 for their Silverlight.
For "No Comply", yes it's cool, but it's far from pushing limits. Tons of ogg and webm have to be downloaded to play this demo.
On the positive side, it shouldn't be too hard for them to add this functionality to IE10. They just have to choose between showing a blank page (FF4) or popping up an error message (Chrome).