I found it to be pretty interesting.

I tend to fall on Apple's side when it comes to not wanting to be forced to support a technology that it is against. That being said, seeing the CPU usage on these simple HTML5/JS games was a bit shocking - no idea if that is due to sub-standard coding, or if it's inherent in JS, but it seems to blow a hole in the "Flash is a resource hog" argument.

I am wondering if better developer tools for creating graphical HTML5/JS and/or JIT compilation will help with this. Clearly an iPhone is capable of amazing things graphically, but that's all been on the native app side.