It looks like Apple is on the Life Caching track. Today they introduced Time Capsule, a 500 GB or 1 TB wireless backup devise. If you combine that with Time Machine (a OS X Leopard feature) and their digital life capturing software (iLife) you get Life Caching. I've called it Digital Life Management, but it's the same thing really. All they need to do is combine it with iCal and provide a way for the life content to be published and you have something special. Not that these tools aren't special, but I've never understood why they haven't done this. Maybe they will, but until then there's an opportunity for something cool.