Every so often OpenLab organises an OpenNight where people can try out there work in front of an audience. The works should be produced using open source technologies. There is much creativity to be seen and heard.
More information here.
I'd like to add a word about a program developed by one of the members of Cunbucket (Jag), it's called DIN (Digital INstrument). It's a very intriguing instrument that reminds me of the theremin.
You can get some of the media files from this podcast