If you've been watching the Watchmen trailers closely, then you likely noticed that Rorschach's inkblot mask is always changing. An effect that actually took some time to put together.
Watchmen Featurette Looks at Rorschach's Mask
The good people at Empire posted the promised featurette for Watchmen and it focuses on one particular character. Actually, it focuses on one particular character's outfit. Rorschach is most memorable thanks to his ever changing inkblot mask. To make sure this cool attribute made it to the silverscreen, director Zack Snyder worked with an effects team to put together the most natural (moving) mask available.