Interesting, you guys really are serious. I'm interested in building this, but I'm don't have the time/not interested in trying to train the black bastards to actually use it. If you guys just want a working unit as far as the mechanics and electronics go I could start piecing it together and let you know if it's feasible (cost wise).
Because there are some intricacies, like whether the sound of the machine scares the birds, whether the coin slot can avoid clogs from being outside for a period, etc., I'd like a tested machine. If you build one for Inaba and he can train them, I'll send him the 20BTC for the video, and buy another from you for 40 (assuming Josh Klein doesn't get back to me first).
If I end up buying directly from him, I'll still honor half my video bounty, of 10BTC for anyone else who can demonstrate a working crow vending machine with a bitcointalk sign in the video.
One day, I hope to see a world where man and crow engage in mutually beneficial commerce in hundreds of cities around the world. :-)