Holo - Mix holograms into videos & photos in Augmented Reality
Smile Snap! - Automatically take a photo when everyone is smiling
Multiverse - Immersive social environments supporting creative artists
PhotoKharma - Automatically get all the photos friends' take of you
Membit - Pin photos to 3d space with augmented reality
Facial Recognition by FB - Get notified if someone tries to use your photo on Facebook