Personal image classification and management.
A lazy way to solve the fact I drown in my own photos/videos/screenshots/etc on a daily basis and don't really have time to sort through it all.
All it would need to do is group images. For example, tell concert imagery apart from pictures of friends or scenery. It could infer a lot just from the dates on the imagery, and group accordingly.
Bonus points if it can then sort through a particular group and suggest the highest quality images of the bunch based on things like focus and exposure.