I still say that The Atlantic Monthly is one of the smartest, most insightful publications in the English language. They consistently produce quality journalism and bring to light stories that rise above the derivative drivel that infests other periodicals. I also find them to be refreshingly apolitical.
You can do a lot worse than to pick up and read an issue cover-to-cover. It's completely worth the $30 per year subscription for the paper edition. You can read it for free online, as well.