Is it possible to use videos from youtube in a powerpoint presentation?

Is it possible to use videos from youtube in a powerpoint presentation?
Is there a way to save it and use it in powerpoint? I have a great video but I can't access Youtube at my school.
Lots of friends ask me this question. I think I should post a little tutorial here.

How to do that?
1. If your flv video is on YouTube or MySpace, Just follow these steps:
1.1 Copy the YouTube or MySpace video URL (example: http://youtube.com/watch?v=j7jmsmmir4y... )
1.2 Go to http://vixy.net which is FREE online conversion service. Paste the URL in the conversion box
1.3 Select the output format such as "AVI,MOV,MP4" and click the button "start" . All conversion would be done automatically.
1.4 When the conversion is done, download the output video to the local disk on your computer.
1.5 Insert the video to your PowerPoint presentation.
PowerPoint -> Insert-> Movies and sounds->Movies from file

See the whole guide here:

http://www.ppt-to-dvd.com/blog/2007/04/10/why-and-how-to-convert-powerpoint-files-to-flv/