While it came out awhile back, I thought this article in the Wall Street Journal on how handwriting trains your brain interesting.
I'll be first to say that I can get my thoughts down much faster typing than writing. But I know writers who prefer to write by longhand first then transcribe on to the computer. And with my own children, I've wondered if our technological advances were causing them to lose the valuable skill of penmanship.
And in the category of ironic, there are apps (of course!) you can get to improve your handwriting (abc PocketPhonics) and to translate your finger or stylus input into text (WritePad).