This video by OK Go (the dancing treadmill guys) will make you smile. Pay close attention at the 50 sec mark when the video starts to get a little bizzarre.
The whole thing is goofy, catchy, and endearing. The thing is pretty amazing once you see that they choreographed the Notre Dame Marching Band plus dancing children with streamers, recording the music live in a field in one take using a cherry picker for aerial shots. The audio setup alone must have been pretty impressive.
And you apparently can downlod the song and video for free from the band’s website.