If we're all sharing our thoughts on Okami I'll throw in my experience.
I started Okami not knowing anything about it, in fact I was worried it would be a stinker due to the art style.
Well, after playing through it I was blown away by how beautiful and epic it was.
The characters are amazing and complex, The story has so many turns and takes you on an amazing journey. By the time I defeated the last boss I felt like I truly was a hero.
I think Okami has one of the best stories in the PS3 era, certainly one of the best in the action rpg genre. My only gripe when I finished it was I wanted more!
Sadly, I never got to play Okamiden. I wonder if there will be a sequel ok PS4. This game has a lot of potential to be a smash hit on current gen.