[Osiris]

If you are looking for a new site that offers a lot of high resolution wallpapers you should take a look at the web album that is offered on the No Pixel website. Resolutions go up to 1900×1200 with a lot of widescreen wallpapers in the resolution 1680×1050. The majority is showing natural images like landscapes, plants, animals and buildings.
One nice feature is the slideshow. If you move your mouse over the current image three buttons are shown on the top of it. The play button starts the slideshow which is loading one image after the other while the other two buttons are for manually navigating the pictures.

It took a while until I figured out how to save the high resolution images. Only a thumbnail is displayed that is not linking directly to the image. You actually have to left-click the image to display the download link to the high resolution image.
The biggest images can have a size of nearly 1 Megabyte, could take some time to load on slow connections.

[Snake91839]

These will be awesome wallpapers

[BryanJK]

I'd also recommend InterfaceLIFT

[chron]

With all these awesome wallpapers, someone should make a program that will randomize your desktop background every hour or something.

[tajahem]

Originally Posted by chron

With all these awesome wallpapers, someone should make a program that will randomize your desktop background every hour or something.

There are programs like this that are supposed to randomize your wallpaper, but I would guess that they only change on a reboot.

WallShuffler - Free Software Downloads and Software Reviews - Download.com

[Unreal Tuner]

Originally Posted by chron

With all these awesome wallpapers, someone should make a program that will randomize your desktop background every hour or something.

I know its about a month later, but try webshots desktop.

Webshots - Photo Management Software, Free Screensaver and Wallpaper

[5starscomputer]

wow very nice and clean wallpaper