So here's what someone that has no stakes in the movie thought:
It's the best movie inspired by a graphic novel that I've ever seen. It could have gone wrong in a thousand different places, and it didn't. I've wanted to see this movie for twenty years, and it was entirely worth the wait. Hear me now, my fellow geeks: you have nothing to worry about. Watchmen is fucking awesome.
You can read his full thoughts and experience at his blog. This is good to hear.