I got there by a slightly circuitous route. Stick with me while I explain.
It started with an investigation of Glee. (If you have a teenage daughter, it's hard to avoid Glee.) I came across a flash mob viral advertising campaign for Glee:
In the passing, I think it's interesting that they have taken the Loser symbol of thumb and forefinger on forehead and turned it into a positive advertising symbol. Anyway, I found the video on the Transmedia site (I think a Twitter contact directed me to it). I had a look about the site and discovered the world of Lip Dub! I think this video shows what it's about better than I can explain it:
Stunningly brilliant - and done in a single take! My favourite bit is where the camerman is walking down the stairs and the students are popping up on the escalator.
If you read the post on Transmedia (New Youtube Craze: High School Students Re-dub Music Videos) it links you to a couple of other videos and there are loads out there from schools and colleges with people doing the same sort of thing. (I like the bit at the end of the Shorewood High School video where they act like they are on a roller coaster.)
Finally, I like this lip dub where a chap has gone to an Apple Store and records himself doing a lip dub to one of his own songs... on one of the demonstration laptops. Brilliant!
Do you know of any other lip dubs that I should watch? Has your school had a go?