Update later. Movie adaptation pick is
Hellboy. Stayed quite true to the original material, and Ron Perlman rules.
From the comic
From the movie:
I was definitely impressed with the transition from graphic novel to movie with Hellboy. Same tone as the comic was mostly kept, they followed the source material close enough that it didn't make me want to lobotomize myself, and again, Ron Perlman was the perfect choice to play Hellboy.