Funny, I had the same thought about this not being Will Eisner's the Spirit, but rather Frank Miller's "THE SPIRIT," which not remotely the same thing.
It will probably be smart, and gritty, and sexy as all get out. But while Frank Miller's take on Batman seemed (to me at least) to magnify those inherent Batman qualities, the Spirit doesn't seem to lend himself to looking through those same goggles. In my humble opinion, and all that rot.
As for the Shadow movie? oh, man. There were some gorgeous costumes and set pieces. That's about all I can say that's nice about it.
Do something wonderful, people may imitate it.
- Albert Schweitzer