Amen. I find it hard to get upset about the takedown notice when I want to take it down for melting my eyes. Perhaps this is unfair of me, but there it is. Thanks for the clutter-free link.
That was a tech demo for popcorn.js, showing how you could replicate the popup video feel. The bubbles are overlaid on top of the html5 video and controlled through javascript.
ADDED. Version without the pop-ups: http://www.rebelliouspixels.com/downloads/Buffy_vs_Edward_36...