So here I present BunnyMark via Jangaroo and HTML5 Canvas!
BunnyMark - blitted version - 30fps (Windows Vista / Chrome) - Pretty fast!
BunnyMark - bitmap version - 8fps - Really slow for some reason. (any ideas Frank?)
BunnyLandMark - blitted version - 30fps - Pretty fast!
BunnyLandMark - bitmap version - 24fps - Not bad.
Here are the source files - enjoy!