I don't know what Warner Bros. made people sign at the secret screening of Watchmen in Oregon, but it looks like nobody listened. Following up, multiple screening reports have surfaced for the film.
Watchmen Screening Reports
The good people at ComicBookMovie have posted an entire compilation of screening reports for Watchmen that all rave about the film while also pointing out some serious differences (towards the end). Read carefully, as just about every report contains spoilers.
"I just was a part of the first crowd in the world to see the movie Watchmen here in Portland. You had to go through so much security to get in, have ID, online registration, sign a disclosure agreement to tell no one about the movie. I even had to go back to my car and put my cell phone away because it had a camera in it. This movie is probably one of the best super hero movies I've ever seen. The characters are great. Dude named Rorschach, after the ink blot tests but the spelling is different I think, he owns everyone. Has this one line after he throws hot grease on this prisoners face, "I'm not locked up in here with you, your locked in here with me". He whoops everyone in this movie. Also Dr. Manhattan is this blue god like character that can teleport and screws his GF at the same time as working on this machine. Anyway, sorry to babble but this movie is worth seeing. I feel lucky to have seen it already. It's unfinished because they need to add in some CGI and green screen effects but when it's done I'm going to go pay to see it. The movie is 2 hours and 30 minutes long, there is so much to talk about one little scene won't spoil it. This movie is absolutely rated R. There is sex scenes, nipples showing, you can see Dr. Manhattans d*ck. There's scenes where a a guy gets his arms chopped off, an ax put into his skull, people being blown up in war. This movie is hardcore. One of the super heros kills a woman for cutting his face in a bar."
Once you get through with all the Watchmen screening reports at ComicBookMovie you will find a couple more at SpoilerTV. Having read the graphic novel, I always thought the squid creature was a little much. Something more scientific and a bit more er, realistic seemed like a no-brainer.