"Tim Schafer is revealing Double Fine’s never-before-seen game jam process!
Contribute and vote for your favorite game ideas to be prototyped (week 1).
Then, Double Fine will create prototypes of the top four ideas and live stream the process (weeks 2-3).
Contributors get to download the finished prototypes for Windows (Steam keys too!) Plus, you get two protoypes from past jams right away."
Sounds like a cool way to contribute to the next steps of Double Fine's internal demo process. If you want to vote on any of the games they could prototype, head over donate and vote!
http://www.humblebundle.com/double-fine

This is a brilliant idea. I'm on it.
I would like to see just how much I've spent on indie bundles.
Wait, no... what the hell am I thinking? No I wouldn't.
Haha, yeah me either. I think my entire spend on video games entirely.... I can only guess...
This is really cool. I'm gonna jump in on this.