I like this one. I also like the blues. Comparing to MS's blue screen of death is so unfair. Blue was around long before MS.
I like this on, too. The Blue Screen of Death is not the same shade of blue as what you see anywhere in Vector or in various wallpapers.
But... as much as I like blue, it is maybe a little too common these days. I remember test driving the Sabayon (or however it's spelled) live CD awhile ago to see beryl in action, they had a orange based wallpaper and related colors for theming. It was definitely a breath of fresh air. Not that I'm a fan of orange, but it worked nicely.
I guess nothing but blue would do for me. I could never live with an orange background, or yellow, or Ubuntu brown, or green, or red, or pink. I also don't like busy backgrounds, photos, nature scenes, etc.
One thing that sort of puzzles and amuses me is why dark backgrounds seem popular with so many Linux fans. I really detest dark backgrounds. How gloomy! Maybe it's too "goth" for me. Every time I check out some Linux site with wallpapers, I find thumbnail after thumbnail after thumbnail with dark backgrounds, and often busy dark backgrounds. The worst of all possible worlds!
Fortunately, we don't have to use them.