Real time ripples programmed in C++ using OpenFrameworks. Frame differencing is used to create the ripples. Ripple algorithm is based on the one here.
It's pretty old hat but it's the first time I've got around to getting an animated 3d model working with AR. It's using OpenFrameworks, the ARToolKitPlus, Theo Watson's wrapper around collada-dom and a slightly hacked version of the Collada RT (the collada-dom sample renderer).