SO, AS I MENTIONED EARLIER, I went to see the blogger-screening of Serenity. I liked it. There were quite a few people from the law school and the local blogging community there, and my sense is that most people agreed.
The trailer was quite reflective of the film. I thought the acting was good, and the whole film had a human touch that many science-fiction action flicks lack. The cinematography was more TV-like than movie-like, but I actually liked that effect. And the sound, often boomy and annoying in films of this type, was excellent.
One of my colleagues attended (not a blogger, but a serious geek -- yes, the stillsuit one -- who has watched all the Firefly episodes and who is a huge Joss Whedon fan) and she liked it a lot, and noted the presence of the trademark Whedon humor.