Cyberbullying PSA Yanks Mean YouTube Comments
This is a very, very cool use of YouTube and Flash technology. In the middle of a "PSA" for the plight of dolphins caught in fishing nets, the reaches out of the video window and grabs one of the mean comments. It turns out the video is for cyberbullying. Very cool.
Of course, you can tel the whole page is "flashed" but if you aren't initially looking for it, the technique works quite well.