Agreed - also worth a read is the source Graphic Novel by Alan Moore. It is very 1980's as it was a critique of the British Government (contrary to Meryls Streep's performance, Maggie Thatcher was an incredibly divisive leader - many here still curse her name) but excellent.
Alan Moore is a writer who actually hates adaptations of his work, refuses to even watch them and has now started making sure he holds the film rights to any new works. Film adaptations include V for Vendetta, Watchmen, From Hell and League of Extraordinary Gentleman. Oh and he created John Constantine.
Ok - history lesson over.