This strikes me as being rather interesting, if only because I'd been writing about being under legal pressure to 'tone down' some of my comments on the pros and cons of PowerPoint before the publication of my book Lend Me Your Ears - and had pointed to this video as an example of something that was 'freely available on YouTube and, as far as I know, hasn't attracted any attention from Microsoft's legal department.'
The removal of the version on YouTube that I'd embedded suggests that someone somewhere isn't very happy about it.
But the good news is that, if you missed comedian Don McMillan's take on PowerPoint, you can still watch it by linking to YouTube from HERE or below: