Punit Goenka is unflappable. When there is good news, the 46-year-old managing director and CEO of Zee Entertainment will smile placidly, and when there’s bad, well, he will smile placidly. Over 15 years and several interviews — as the man leading either a troubled or a successful Zee, or as the chairman of Broadcast Audience Research Council trying to set up the world’s most difficult audience measurement system — Goenka has remained calm. It is not a quality you immediately appreciate if you have met with Subhash Chandra, the founder of Zee and Goenka’s dad. Chandra speaks his mind, has