Pixate - http://www.pixate.com/education/demos/
I have an hypothesis that I drew after watching the Pinterest prototype - bounce effects are good for coming to the end of a list or other times when I'm directly manipulating something that reaches a boundary. Bounce effects for
Project Comet - http://landing.adobe.com/en/na/products/creative-cloud/comet/229818-notifyme.html
Lots of Sketch in here, but I'm assuming there's PC support and the transition/IxD options are very empowering.