This is cool. Transform and project a video onto a real 3d grid. This looks as you can easily reproduce this on your own site.
Directory with sources (plus look at the source code of above’s website): http://wiki.techfandu.org/eduvid/projective-video/index_files/
Video as canvas
Instant on-the-fly green screening
Just have a look at the source code of the page – you’ll get it quickly
HTML5 at it’s current best state
Technically very interesting and nice interface design
A wikipedia which is based on video – try this, it’s fun!
And the framework for this:
explains in an exciting post about annotations in HTML5. Note the links in the post to popcorn.js framework.
The background of popcorn is the Mozilla-project http://www.drumbeat.org/webmademovies