Just as a quick add to this great thread - re the OP who writes a lot of stuff in notebooks.
A friend (medical technician) has to draw diagrams, during surgery, of devices that need built later. She was drawing diagrams in the hospital, going home, scanning the document, emailing it to the manufacturer.
I found this: http://www.livescribe.com/
an electronic pen that 'records' what you write as you write it in their proprietary notebooks (cheap-ish). Connect the pen to your computer using the free software and you get a PDF doc generated of whatever was on the page. It's great. Of all the gadgets and what not I've seen, I was genuinely surprised how good this is. Once the doc is on your computer there is OCR in the software, allowing you to search PDF documents for words, when those words are in your own handwriting!
Does lots of other stuff, like record audio, then can play the audio back in sync with what you were writing at the time the words were spoken. Watch the videos on the site, will make sense.
Not in any way connected to the manufacturer, just I've filled Moleskine books for years and never knew what was in them!
Cost about £120.