"Why the Brain Prefers Paper"
Just read an interesting article in November's issue of "Scientific American", which, unfortunately, I can't link to in full. Here is the abstract:
It talks about the normal benefits of paper, such as LCD screens causing eye strain and the distractions that go along with reading on an electronic device.
It delves deeper, though. It talks about how children appear to learn words better when writing them rather than typing. It talks about how people retain information on paper better because their minds are trained to pay more attention for longer when looking at paper rather than screens.
Personally, I print everything that I need to read carefully, be it a technical document, textbook, or even a particularly hard to find bug in my code.
I think the biggest unanswered question, though, is if there is something particularly beneficial about paper, or is it a result of our paper-driven culture.