Interactive: Fall 2013 TV preview: Watch the trailers The top TV networks are gathered in New York City this week to unveil their hot new shows. But the real drama seems to be off screen, as speculation runs rampant about what ABC, CBS, NBC, Fox and the CW will do in the face of increasingly sagging ratings and splintering audiences. Despite the concerns, the new network lineups appear to be a mix of tried-and-true formats (crime and mystery of the week), big stars ("The Michael J. Fox Show") and complicated family dynamics. Cable, Netflix and the Web may be getting an increasing share of the audience pie, but network execs hope these first glimpses of their new offerings will be enough to catch new viewers. Click the images below to watch trailers of the shows.