SpatialKey from Universal Mind. It's pretty slick with timelines, heatmaps, animation, filters, and easy data loading from CSV. They have an enterprise angle as well with a Java server side application. It reminds me a little bit of the tools that could build something like Trulia Hindsight or the London Transit slider maps which were built by Stamen. Now if I could just find a way to create deep links into it...or is that called Flex?