First: a pet peeve. The network 1 hour 'news magazine' shows (like 20/20) that used to focus on 3 or 4 different and diverse stories. Now they take a criminal case (usually one that's resolved or ended) and, if it isn't already, sensationalize it. This is always a story that could be covered in 10 minutes but is stretched over an hour.
Before every commercial is some sort of idiotic teaser.
"Maryjane thought she got away with a simple crime, but it was about to get complicated, and DEADLY really quickly and in the most SHOCKING way!"
(I think the writers spend too much of their time at the writers conferences playing Mad Libs.)
After every commercial break is a 3-4 minute rehash of everything that's already been stated, just paraphrased (sometimes) to sound different.
What I find interesting is that the people involved in all of these events almost always fall into one of 4 categories. 1. The super rich. 2. Celebrity. 3. The dirt poor. 4. The guy or girl next door.
I find these stories to be neither enlightening, entertaining or even compelling.
Now as to the History Channel (which a few years ago could have been called the Nazi History Channel) and these other specialty channels that make try to make weekly series about themes and subject matter that clearly is beyond their budgets. They would be better off consolidating and spending a little more time researching their subjects and less time padding. To devote the same amount of time to "how artificial hearts are made" as to "how shoe laces are made" seems ridiculous, and yet, there it is, right there in front of you.
While I agree that PBS is the best, even NOVA has been starting to get spread a little thin.