I've been a member of the cult of Kokoku Hihyo, the Japanese advertising "commentary" magazine, for a number of years now--ever since I discovered it in Harvard's Reischauer Libary collection during one of my dissertation dives into Japanese textuality. MUCH cooler than Ad Age, there really isn't an English language equivalent that I'm aware of. Kokoku Hihyo, in addition to serving up the normal fare of ad news and criticism (more like Adage's Creativity in that respect), is willing to confront serious and sometimes extremely silly intellectual and cultural phenomena. The last couple of years, they've run issues focused on the mind-blowing information design ideas coming out of the Masahiko Sato Labs (佐藤雅彦研究室) as well as Shincho Bunko's successful Yonda? campaign.