I think a lot of people do not know that it is possible to download any video from You Tube in order to play them offline on the computer or burn them to CD or DVD to play them on TV screen.
There are many programs that enable it. I use Free Download Manager - you can download it for free here:
http://www.freedownloadmanager.org/. It can do a lot of things but also download video from video sites, such as Youtube, Google Video, etc. The video can then be saved in native .flv format or converted to one of more popular video formats.
You just put video links in queue and then let the program download them for you. Just make sure you add them in flash video - they will be converted into avi format if you choose to.
Than I usually convert them to DivX format to make sure they will play well in DVD player (my DVD player supports playing video in DivX format - most of the new ones do the same) and than I burn them to DVD.
It is really easy and as I mentioned in another posts - You Tube is such a great resource for almost any kind of video!
Good luck!