We've not had a genuinely good one of these in a while... let's raise the bar again.

ITC: The best wallpapers you have - the sort that are so good you'd saved them by reflex action even whilst trapped staring at their magnificence. If you have to ask yourself if an image is worth posting in this thread, it isn't.

(Note that we're not just shooting for the merely aesthetic here, wallpapers significant in their subject matter or subtext are highly welcome too.)