There's an article in today's Washington Post that's rather on point. NBC is trying to rewrite the "rules" of television, basically. They're not looking for ratings wins. They're looking to fill the hours cheaply, fully expecting low advertiser dollars. Plugging a show like Merlin, which they're buying on the cheap, puts a quality, polished program in the schedule. They don't need great ratings for it. They don't even need good ratings for it. The show performed to expectations. Like the new Jay Leno show, Merlin is the model for NBC's future.
If we get more quality shows like Merlin on US TV as a result, this might well be a good thing (if BBCA hadn't taken over the broadcasts of Doctor Who, I bet it might have turned up on NBC eventually, too). It doesn't matter to me if they're cheap and only watched by 50,000 people, give me a dozen Merlins instead of more Jay Leno clones and "Who wants to marry an axe murderer" reality crap.
As a further aside, has anyone heard if there will be a North American DVD release of season 1?
Alex