The new iTunes 11 is the most radical change to Apple's media management software since 2003. As Walt Mossberg tells us, the new interface is excellent as long as you are ok with reacquainting yourself to it and don't miss several cancelled features.
With "My Queue" you can quickly save videos to watch later.
To add an item to your queue just click the sign next to the video.
Once you've added a video visit "My Queue" to start watching!