- Google Street View or Google Earth with live, real-time video.

- Augmented reality in your web browser (e.g. manipulate virtual objects by gesticulating at your webcam).

- Put a fish eye lens on your webcam, and then map the resulting video texture onto the inside of a sphere. A viewer inside the sphere can then look in different physical directions without the webcam having to actually move. For extra points, use multiple webcams pointing in different directions and combine them. Result: simple telepresence.