Swingtown (tv program)
A parting of the programming ways for networks, cable

AND THEN, the audience parted.Here's what has happened to TV viewing this summer: People who want reality shows have stuck with the broadcast networks. Viewers who prefer scripted series have migrated to the cable channels. And in terms of ratings, the once-vast gap between the two worlds is shrinking like never before.That's an oversimplification, but not by much. Consider this statistic: Four of the top five shows on network TV so far this summer are reality programs, including the No. 1 series, NBC's "America's Got Talent," according to Nielsen Media Research. Meanwhile, eight out of the 10 most-watched programs on ad-supported cable are scripted dramas.The top-rated series on...