^^^
Well judging from the reviews I've read, it seems that the Watchmen movie is really solid and groundbreaking. In short, if you liked and/or enjoyed 300, then you will definitely enjoy this one as well. It looks like Zack Snyder has created lots of hype for this new film and from the looks of it, it indeed delivers.
Boy I can't wait to see this flick tomorrow
P.S.
Btw, the "Science of Watchmen"
Interview from one of the consultants (a physics professor) hired by Warner Brothers and Paramount Pictures to act as a science/technical consultant for the film.
YouTube - Science of Watchmen