Vertigo put together a great collection of 672 Obama headlines using Silverlight's deep zoom capabilities. The cool thing here isn't so much the number of headlines or the mosaic of pictures. It's how you can interact with the newspapers' front pages. It's not just a mosaic of thumbnails. You can pan and zoom really smoothly with a roll of the scroll wheel and mouse drag and a click. Zoom all the way in to read the actual articles without it taking forever for high-resolution images to load.
Take a look see at Blaise Aguera y Arcas' TED talk for where this technology is headed:
[via Data Mining]