As promised last week, Youtube has begun rolling out its 1080P content, according to their blog post on the matter. The first video? Pennie the Jack Russell recorded on a Toshiba Camileo S10 HD. We've embedded it for you below but you'll need to go full screen if you want to experience full CPU blowout.
On the most recent 13-inch MacBook Pro with 4GB of RAM, we've got Flash redlining the CPU, a few beach balls and we're missing some frames. Also it looks like you may be able to trick Youtube into displaying your content in full HD by putting a trailing "&fmt=37" into the URL. Pulling the original source MP4 from Youtube will probably yield better results.