Here, couple of screen-shots from me ...
Example of blend textures contrasting with some better textures all around the Demo (and surely in the whole game as well):
http://img250.imageshack.us/img250/7269/bio1qu8.png
Example of shiny texture, that's just one out of hundreds where you just have the feeling that Rapture is made out of humid plastic materials, some places it's "ok", but most surfaces are shiny while I would tend to believe they shouldn't, at least as far as "realism" goes. Even if we exclude reality and consider it's for artistic purposes then I say it's just too much of it even for that reason:
http://img522.imageshack.us/img522/4489/bio2zi7.png
Another example of shiny textures, this time it's skins and blood that's shiny, not just walls or inert materials, that guy looks like a figurine, he looks like the plastic soldiers of FarCry:
http://img250.imageshack.us/img250/5043/bio3vp4.png
An example of blend textures here, that's the kind of texture you could find in games like Halo or Halo 2. It has a lack of details, no signs of decay on the paint or scratched surface, or degradation from humidity all around Rapture (I'd presume so), just a gray texture with a couple of black lines and a shiny layer, voila:
http://img522.imageshack.us/img522/5784/bio4ay2.png
Last example, here we can see what would logically seem to be
dried blood (it ain't falling from the wall, I didn't blew any enemies nearby, it's certainly there since a long time), and it's so shiny that it just doesn't look like blood in the end, but more like well crafted red glass:
http://img522.imageshack.us/img522/9319/bio5hv7.png
Settings were: All in-game maxed, 1280x960, no A-A (doesn't work in DX9), and A-F is 8x but it doesn't make much of a difference so far (might also not be working in DX9 but I'm not sure), all drivers settings to High Quality, no optimizations enabled. Some screens ended up in 800x600, I don't know why, might have been Print Screen not capturing the whole screen properly, sorry about that, but I indeed played at 1280x960.