Evernote for Wedding Photographers
If you haven't heard of Evernote, it's a digital notetaking program that allows you to enter information (text, photos, audio, files) from pretty much anywhere and access that information from pretty much anywhere.
It's been around a whlie, so I wouldn't be surprised if you've heard about it.
Since the base program is free I think I downloaded the software the second I heard about it. I'm a bit of a “productivity tool” addict. Maybe you can relate.