Most of that is not new, only a few naff advertising backgrounds. Better off making your own from Interfacelift. Loads of great wallpapers there.
Downloaded themes from MS Mass renamed extensions from .themepack --> .zip WinRAR-Extract here Sorted out wallpapers and got 24 new nice landscape wallpapers Just too bad that some of these wallpapers have been compressed with abolutely horrible .jpeg compression and there is some significant quality loss due to that
I've already posted the link yesterday only in main OEM themes thread.. anyway, nice to make seperate thread..