One early morning this week, when I definitely had better things to do, a blog post at Inside the CBC, led me to this video by Tim Tamashiro:
So then I decided to see what else was on youtube using infinitube.net. The leading video there now is the one that Greg liked so much. My pre-dawn surfing, however, led me to the Ukulele Orchestra of Great Britain.
If, as I hypothesize, these performances appeal more to geeks than the general population, maybe you will like these videos. There are lots more there.