We were on set of the upcoming screen version of the Alan Moore classic -- and bring you early scoop.

The news that Zack Snyder was going to tackle the epic comic universe of Alan Moore and Dave Gibbons' 'Watchmen' brought excitement and trepidation to the fanboy world.

Snyder's the guy whose vision guided '300' to unexpected blockbuster status, after all, but '300' is no 'Watchmen' -- that is, an iconic, revered graphic novel that brings to life an intricately written alternate reality of superheroes, crime and Doomsday.

''If you filmed everything, it would be a five-hour movie,'' Snyder told us.