Poor Okami. So loved! So under-bought. Today's your chance to turn a little bit of love into a little bit of impulse buying, then, with Capcom having an Okami firesale in the company store.
The Wii version? US$20. The PS2 version? US$20. At that price, if you haven't played it, you probably should, because $20 is in the "oh, I'll at least give it a try" range.
Yes, it's a lot like Zelda, and yes, it does like to prattle on (and on and on and on...), but hey, its gorgeous. And unique. And $20.
We'd probably recommend the PS2 version, which although lacking in widescreen, is a bit easier to control (that and if you've got a backwards compatible PS3 it looks scrumptious).