No, I don't think it can do portrait. I've tried twisting it briefly, and it doesn't have any other obvious mechanism
But, I must say, this monitor is amazing. It's huge. I had a 17inch CRT, and knew people with 19" and 21" monsters. This thing gives you the benefit of that much size, without having to lug a anvil around. It's cool, fairly thin, and looks like it's a USB hub. The analog cable included looks to be fairly short, ~3 feet, and a AC adapter hooks up to the traditional monitor type plug (extra length).
Mine has 2 bad pixels--one that's a bright pure blue whenever the screen is on, and one that's a little less messed up, but still blue. I don't know if it's worth the hassle sending it back. I have a 4 year warranty on it, so I guess I could always change my mind.
When I first booted up, there were some image errors--parts of the screen wouldn't have static colors, it'd speckle a bit. I installed the new catalyst drivers, and let Windows detect and all, and that problem is completely fixed. Cleartype works great, and overall the image is just as clear as my CRT. I played a DVD, and noticed absolutely no ghosting, a couple minutes of CS, and the new JK demo. No appreciable ghosting. When scrolling through a webpage, it's noticable, but not important.
The viewing angle is kinda small, at this distance (~2.5 feet?) you almost start to see a little color variation at the bottom, but it's really not a problem. It's so great!
Now, a couple questions for everyone: is there software that'll help me 'optimize' my settings? What in general am supposed to do? I've just upped the contrast a lot, so far.
[Edit:] Note this is just using the analog cable so far. I still haven't even gotten a confirmation from belial. More reports when I get it in the mail, of course.