Scoutstuff.org has a wonderful series of four YouTube videos that capture a century of Scouting in the United States. The fully narrated series of videos is awesome. To view these videos visit
http://www.scoutstuff.org/bsasupply/info.aspx?page=video.
If you like the video, you may also want to think about getting Boy Scouts of America: A Centennial History Book for yourself or giving it as a holiday gift. Great way to support Scouting!