it is actully meant for apps that have a real-world analogue. i.e. iTunes is like a stereo, iChat like a phone (i guess??). Not really so sure about safari.
So by that logic i guess Textured finder makes sense, maybe.
I think what OSX is missing is themeability, or user textures.
It started as a neat, minimalistic interface, deliberately regulated to avoid the Las Vegas-like clutter of Windows (or, even worse, the myriad WMs and toolkits under Linux). Then Apple (who have absolute control of the window-drawing code; unlike Windows, apps can't override their own window-frame drawing code, or at least nobody has figured out how to do so) added the brushed-metal mode, which is controlled by setting a "k3wl bit" in the window data structure. They sternly told people not to use it except for apps with a hardware analogue -- and then used it for their web browser. So soon every crappy piece of shareware with a name like Fred's Phone Book and Text Editor is going to go brushed-metal. It's the Red Queen Effect: those who stand still end up being left behind.
Apple have opened this Pandora's Box. What they should do is add a mechanism for allowing apps to specify their own texture maps -- and for applying the maps to window
...and for applying the maps to windows in a reasonably consistent and un-ugly way.
Uh... Red Queen Effect?
What it says, i.e., the only way to not be left behind is to keep moving. It's from Lewis Carroll, and was popularised by Richard Dawkins to describe evolutionary arms races. It applies equally to the means of getting GUIs to look "k3wler", where brushed metal is the thing and anything in the formerly "lickable" Aqua GUI is now boring and old-hat.
Sheesh. If the punters want garish window themes, let them have garish window themes.
Besides, Gnome and KDE aren't looking too shabby these days, certainly better than WinXP (three tacky themes or the old brutalist look) and especially compared with the auld days of TWM, Motif and FVWM, though I think they're still waiting for the Open Source certified guru for elegant user interfaces. Someone wrote an essay on that, dunno who.
You watch. It'll be Mail next.
After that, the UI designers'll probably come up with some doubleplusAqua, and their app dudes will have to convert all their stuff back to that. Woo. Progress.