I'm not sure if anyone noticed this, but apparently Google videos is embedding Yahoo videos on their site, and they don't post very well on my own message board. I recall reading something about the URL appearing above a blank video window, but I don't recall the solution.
Example: Post this video to your Forum, and it will not work:
http://video.google.com/videoplay?do...arch&plindex=1
The video really is this one:
http://www.youtube.com/watch?v=5rEg_9mQQmo