I was pleased to see this writeup on the XB-70 Valkyrie, which I consider the coolest and most intimidating aircraft ever created by any nation, anywhere, even though the article is lightweight and the author is unsure what a "ballistic missile" is. Click to it for the photos and videos.
Runner-up, of course, is the A-10 Warthog, which is a lot more intimidating if you happen to be in its gunsights, in which case your ace (our ace, actually) kisses you goodbye.
On a whim, I went up to the Pirate Bay just now, and discovered that, 18 months later, sex and Photoshop still trump everything else, at least in terms of pirated ebooks. (And Photoshop is, by a factor of 2.5, the most popular Windows app on Pirate Bay.)