I have a 1920x1200 Dell monitor and run it at full resolution.
Most sites appear very narrow in the center of my screen, and I wish that there was some type of 16x9 standard for websites.
I'm not saying that websites should broadcast exclusively at 1920x1080, but an option to go to said resolution would be nice. (Like "click here for 1920x1080")
It kinda makes sense in this way: Its pretty much settled that home TV's are 1920x1080 and will probably remain this way for at least another 5 years. As more and more televisions are coming factory equipped with wireless and internet connectivity, it would make sense that a website would want to have a 1920x1080 option perfectly suited to match this TV "standard."
Yes, it is kinda unpleasant to see lines of script continue from one side of the screen to the other, but that is just the way web browsers contend with script on a large monitor when the site isn't very wide (pixel-wise). On a proposed 1920x1080 website, programmers wouldn't run scripts from one side of the screen to the other, it would be inefficient use of space. That said, it is a shame to have so much monitor real estate, and virtually no websites that will take advantage of that property.