This is the first YouTube video I ever saw, and it's still my favorite. Phillip Scott Johnson is responsible for it; he morphed carefully selected and arranged painting of women from throughout the history of art, and set it to Yo-Yo Ma performing Bach's Suite No. 1, BWV 1007 In G Major "Sarabande." Most of the images used are identified here. There's a higher resolution version of the same video here on Vimeo. You can find Johnson's other works on YouTube under the name eggman913. His MySpace page is here.