If you've got a late-model Samsung "smart" camera, you should check out this nifty function. Samsung Home Monitor lets owners of the upcoming NX3000 camera (and presumably other models in the NX line) view video from the camera's lens remotely on their phones. It's a neat application of the hardware available.
Using the simple app, you can treat your camera like a security camera or baby/pet monitor. Users can stream live video from the camera at any time, as long as there's Wi-Fi in the house and your smartphone has a data connect (Wi-Fi or mobile).