Over the years I've subscribed to a number of magazines but the one intellectual essential, to me, is the New York Review of Books. Anyone else subscribe/read it?
I pick it up from time to time. I'm a bit of a right-winger, so I can't subscribe and keep my blood pressure in check. Their paperback book series though is one of the best imprints out there. I have about 50 of them. If you haven't seen them check it out; great books that haven't been in print for years.