i've noticed that the resolution of youtube videos is now higher. which means its worth revisiting old favourite video links or finding the newly posted high definition ones and using site Catch Video
to download them onto your computer in almost any format you would like - be it for your ipod or your mac.
here's a case in point as found on the Dollification Forum video thread:
i also found that the best time to use Catch Video is either late at night or first thing in the morning. the service is really great and brings youtube to anywhere you want to see it.
enjoy and do post any other ones you have found which are now high def or high resolution.