Not exactly NXT, but it's younger sibling the RCX (who remembers those?)
These guys needed to test their iPad app by taking 10,000 photos. Either it's an *incredibly* boring job, or you build a robot to do it for you :)
Simple but effective!
More info from their website - http://lab.pheromone.ca/2011/08/30/the-art-of-automation/