Google has a neat Chromecast application to show off today. Photowall lets you and your friends get together and display images right on your television.
You can create a Photowall using your Android phone or tablet, or from your laptop using the Photowall Google Chrome Experiment page. Everyone sends photos to the big screen, and when you're finished the application automatically generates a video and drops it on YouTube so you can share it with friends who weren't around to help make it.
It seems like a nicely done little application — both on the Android side and the web app itself, and we'll be playing with it ourselves. If you have a Chromecast, give it a try!