The season's 13 episodes are a perfect suite of politics (Joan vs. the male establishment, the rivalry between Ken and Pete); humor (the firm competes for a Honda account and trips over itself trying to read their Japanese clients); hope (Don and Betty's daughter Sally's cry for help finally falls on receptive ears); and growth (Pete, so weaselly in season one, has become the show's most matured cast member). Each one comes with full commentary by creator Matthew Weiner and various cast and crew members. Also included are documentaries on the historical landscape of the period Mad Men covers: divorce, the Ford Mustang, and the 1964 presidential campaign. All are informative enough, but for a show that's very serious and buttoned up, one can't help but feel a little disappointed there aren't more lighthearted behind-the-scenes extras that could have been included. But perhaps Weiner & Co. feel it's better to keep it all behind the curtain.