Here's an interesting app (or framework, not sure) called PTPT demo'd on a Tab 7.
http://petitpetit.de/en/products/intro.html

Basically this looks to first, centralize data on a device and second, associate the data using 4 basic types (person, thing, place, time -- PTPT, get it? ). Each piece of data can have one or more of these 4 types. The app can then be used to intelligently display a users data using these associations.

The concept is novel, and very smart, though the implementation is entirely too complex for the layperson. When I find myself having to read a secondary page to find out what a bit of tech does, then its already too hard for most.

Perhaps with a bit of massaging, this could be quite cool.