Those vids could be early software design.
On my epic 4g touch I get crappy video with AOSP and great video with the stock rom. My AOSP vids look like these vids being posted which is simply due to un-optimized codecs for the processor.
I'm sure this wont be the case with the final builds.
When you see something go screeching across the floor, leap up and latch onto your friends neck you just have to laugh cause... what the hell is that thing.
Remember people, instructions are there to help you not hinder you and anytime you skip them you are doing the same with your phone as it would be to walk off a cliff with a self packed parachute.... did you do it right by following the instructions or did you just shove it in the bag and jump..... think before you leap!