Pixar holds an internal demo party every year.
Only criteria is "Show us what you can do in real time!"
Here's my entry for 2013. This time I procrastinated so much that I merely had 8 hours to build something.
It's a short piece set to the horns of the Namgyal Buddhist Monastery.
Uses: libcinder.org and bulletphysics.com
Loading more stuff…
Hmm…it looks like things are taking a while to load. Try again?