Special To The Director's Cut Gary Levin, USA TODAY Last year I came here right off the top and said we had a bad fall," NBC Entertainment chairman Bob Greenblatt said at a TV critics' conference Sunday. "I'm not saying that this year." In an unusual development — NBC has been the No. 4-ranked network for the better part of the past decade — it's now operating from a position of strength. NBC's audience has grown 19% this season, the only major network to show an increase, and ranks second behind CBS and first among the young-adult audience it sells to advertisers. Most of fall's gains stemmed from the decision to add a fall run of The Voice, the singing competition that handily beat Fox's rival The X Factor. That, in turn, helped launch two companion series — the J.J. Abrams drama Revolution on Mondays and the Matthew Perry sitcom Go On on Tuesdays: They're the No. 1 new drama and comedy among the young-adult audience. Now, it fa...