Free Food is a research project to develop an open protocol for decentralized food delivery. It enables host devices to self-organize as a geosearchable p2p restaurant marketplace which requires no coordinating central authority. The project touches a breadth of topics: DHTs, space-filling curves, distributed ledgers, attack-resistant trust metrics, etc.
Stealing Ur Feelings is a web-based interactive documentary that reveals how Snapchat can use your face to secretly collect data about your emotions. Noah is implementing Constrained Local Models to do emotion recognition. There's already a cool demo!
My favorite part of this is that it's currently a work in progress, so you can follow along in the repo as the magic happens.