MacDevCenter.com just published an article I wrote about building a hands-free shooting rig. It basically lets you take picture by saying Take shot in a wireless microphone. It works with MacOS X and an iSight but I give clues on how to use it with a digital camera. I also suggest using a Bluetooth cell phone as a modem to moblog.
This rig is a prototype of something I would like to implement with JMF and JavaSound. I’ll do that someday :)