It's been long since I approached Preacher and I can say without doubt I'm glad I did.
Every series involving a character that can call god an asshole will always appeal to me; by the sole fact that I instantly think it doesn't take itself too seriously and allows for the entertainment to be the key point in its development.
The characters are fun and far from perfect; the violence is non-stop and some of the jokes handled in the book are just plain out hilarious.
I don't recommend it to anyone with too many sensibilities but if you are looking for something a bit toned-up from your usual superhero softies; definitely preacher is the thing to go.