I found a koooooooool site. It’s YouTube for teachers called TeacherTube.com. The video are focused on education and there are not inappropriate videos.
Here’s Barney and Andy
http://www.teachertube.com/player/search/mediaplayer.swf
I wish poor Barney could have heard the School House Rock song
http://www.teachertube.com/player/search/mediaplayer.swf