Oh sorry -- were you guys referring to my post? If so, I apologize for not clarifying...
Of course the Westy does 1920x1080 in a 1:1 manner, because that's its native resolution. Just like any other LCD running at its native resolution, whether that be 1280x1024, 1680x1050, etc. Each pixel in the native resolution of 1920x1080 is displayed to a corresponding pixel on the panel, which makes for a very sharp picture.
Notice that on most LCD monitors, when you apply a lower resolution in Windows than the monitor's native resolution, things (like text) tend to get blurry and graphics lose some sharpness and definition. This is called interpolation, and some monitors are better at keeping things sharp than others. When you switch to a lower resolution, it doesn't usually use 1:1 automatically (if it did, you'd have a perfectly sharp display in the center with black bars all around and most people wouldn't like that). Rather, it "blows up" the smaller pixel area to fill all of the available pixels that are normally used when operating at the native resolution. So you still occupy the full area of the monitor's panel, but it's really operating in fill mode rather than 1:1.
So yeah, what I was referring to was scaling...now like I said, for desktop use, most people aren't going to want to run a lower desktop resolution in 1:1 because of the black bars that would surround the desktop. They want their icons/text/whatever to be bigger and deal with the reduced image quality of fill mode. But for games, especially older console games and what not, a lot of people DO like to utilize 1:1 in order to avoid detail loss and keep things nice and sharp as they were intended to be.
For example, I rented Resident Evil 4 (PS2 version) and popped it into my PS3. I'll be honest -- at first, it looked like crap. Things were very blurry and ran together. It was playable, but by no means beautiful. I then read about the PS3's ability to run older games in 1:1 mode so that they would look better...I guess by default it was using fill mode. I'm not sure what resolution RE4 was coded to run at, but it doesn't look that great at 1920x1080. So I switched to 1:1 mode. I got the black bars and the game window became smaller, but it looked a heck of a lot better.
Same goes for original XBOX games. I've played them in fill mode on the Westy, and it's great that to play on such a large screen but they don't look nearly as sharp as I remember them being on my old 27" CRT. If I could run them in 1:1 mode on the Westy, they would look better but the game window would be smaller.
For PC gaming, I don't see many people running older games in 1:1 mode either. Sure, your copy of Doom might have been limited to 320x480 or whatever, but chances are you're gonna use fill mode and live with some detail loss rather than playing the game in a tiny window in the center of your big monitor. And I'm not even talking about games as old as Doom...I mean even games that only supported 1600x1200 are typically played in fill mode rather than 1:1.
Now here's where the important part comes in...some monitors are able to do 1:1 for anything coming into them, regardless of whether or not the source can do it. So if your device (like an XBOX or PS2) doesn't do 1:1 on its own, the monitor can take care of that for you. The Sharp 32" 1080p TV that I owned for a while was able to do 1:1 (as well as fill and aspect modes). So when gaming on that unit, I was able to run older console games at their original resolution (480p or whatever they supported) without the display being stretched. Other monitors are able to do this also, such as the BenQ FP241W, HP W2408h, Dell 2407WFP and 3008WFP, etc. But the Westy doesn't do 1:1 on its own AFAIK. This isn't a big deal if you are playing PC games (since you can use the graphics driver to force 1:1) or PS3 to play older games (since the PS3 also apparently does 1:1) but like I said in my original post, if you're playing older console games like XBOX/PS2/GameCube, they will always play in fill mode. Some games fare better than others, though...for example, Burnout 3 seems to lose a lot of sharpness, but Half Life 2 doesn't seem terrible. Then again, if I was playing Half Life 2 I'd rather play it on PC where the graphics would be a lot sharper anyway.
To further complicate things, some monitors only do 1:1 through certain inputs, so make sure you do your research if having a monitor that will do 1:1 natively is important to you.
I guess I'll stop typing now, since if this gets much longer I doubt people will bother to read it. I hope I wasn't telling you things you knew all along; I was merely trying to clear up any confusion regarding the Westy's ability to do 1:1. I think you were both right to some extent, but somehow ended up on different pages...BIGFOOTPI, you are correct that people wanting to avoid scaling for PC apps can set that in the graphics properties. But my comment about the Westy's inability to do 1:1 was referring to console games and other (non-PC) sources, so if it's important to you, make sure your device can do 1:1 before it's sent to the monitor.
On a side note, I hope my unit is shipped soon. The order status has been "Sent to Warehouse" for almost 2 days now. I want my shipping confirmation dammit! Can't wait to get that bad boy to work and be more productive!