Boing Boing recently pointed out a music video created by Jonathan Coulton. Mr. Coulton went to Flickr and found a bunch of images with Creative Common licenses. He then created a touching music video based on those images. This is the sort of thing that could not have been done without Creative Commons as Mr. Coulton would have have been tied up for weeks & weeks searching for the copyright owners of the images to get each of their permission to use the images in his project.
Mr. Coulton also has a selection of his other songs (also CC licensed) on his website which are worth downloading.