Well I saw it on the weekend. I went in to see [Zack Snyder's] Watchmen and I enjoyed it. It's not a perfect film, on one hand it's overly long but on the other hand they could have explained some things a little better for the noobs...
I understand that the comics show the origin of Rorschachs mask, and while not entirely necessary to the story being told i would have liked to have seen that. I guess I'll wait and see what the extended cut includes.
The Nixon stuff was unbelievably bad and the end titles music really bugged me, not because it seems out of place, just because it sounds completely rubbish. I'm sure there are other things but overall they'd be minor [purely my opinion]. The overuse of slo-mo / blue dong / cheesy music didn't bother me all that much.
I really don't understand the mentality of some people but there were young kids in the audience. Needless to say they were ushered out after Rorschack started getting some decent screen time.