2 software applications I'd like to see

Both of these are things that are either already possible or nearly so.

Virtual Reconstructor: given an archive of photographs and videos, construct a 3-D interactive model of the structure(s) and/or scene(s) depicted. If, for example, you took pictures of a house under construction, it would enable you to in effect see inside the walls. Or you could just take a trip down memory lane.

The Lazy Diary: I want something to remember my life for me, because I sure can't. It'll pull in my email, photos archive, voicemails, Facebook, Twitter, browser history, financials, and whatever other electronic data I generate, and construct a timeline of my life. Then I'd like to be able to ask it questions. "Where was I on June 4, 2005?" "When did I last see Chuck Norris?" "How many times have I been to San Antonio?" Etc.