none, the news has become over-sensationalized hype and media spin. i think network news is now only a shader better than tabloid journalism.
The local channels use this when they tease you with story you can only see on the late news...When 24 hour news channels popped up years ago, the journalistic integrity of television news declined. It's more about sensationalism and filling time slots with everything and anything to get the viewer's attention and to get advertising revenue based on viewer ratings.
I watched (NBC) John Cameron Swayze,nightly for 15 minutes-7:30-7:45.Sponsored by Camel cigarettes,put the "T" in your T-zone.Beat that!!I watched Walter Cronkite for years, then Dan Rather, but switched to Tom Brokaw and now Brian Williams... I occasionally watch Katie Couric (liked her on the Today show), I rarely watch CNN or Fox news etc... will listen to CNN Headline on Sirius though... (although it's not headlines anymore)