For teachers who like to show lots of Youtube Clips quickly and easily, again, I recommend DragonTape as a site to use. You go out and find the videos and paste them to this site. This site places all the videos in one continuous stream and plays them back to back to back, etc. No need searching for videos or having multiple windows open to show the videos. Use this site and put all your videos into one long video chain. The update to this site is that you can now post your video chain to a blog or Facebook. Cool!