Microsoft has made its AutoCollage software available as an exclusive free download on its Innovative Teachers Network. It was created by Microsoft Research and exploits "advanced digital tapestry and facial recognition technologies" to enable all sorts of clever image manipulation.
Innovative Teachers' Kristen Weatherby and Stuart Ball have been using it for their own ITN postings (example left) and Kristen explains the offer in her latest post. The only string attached is that it's an exclusive freebie for members of ITN. You can register here.