Special to the Director's Cut Blog By Gary Levin, USA TODAY Viewers are tuning in to the major networks this fall. Ratings are up 2% after years of steady declines. New hits, big gains for some returning shows and comparisons with last fall's strike-hobbled start have helped. But the biggest factor: "There's much more DVR recording this year than in the past, which has had an impact on all the numbers," says ABC prime-time research chief Larry Hyams. A fourth of young-adult viewership is now recorded, though ratings among ages 18-49 are flat. Starcom Media analyst Sam Armando says the season is off to a decent start: "People are aware of the shows and are checking them out." But overall, cable is down, partly from news networks' post-election drops. AAmong the networks: -- Top-rated CBS is up 6 percent (and flat among young adults), thanks to big gains from the seventh-season wonder "NCIS" and a strong launch for its L.A.-based s...