[Charles Martel]

Sexiest airplane... has to be the SR 71 and its predecessors.

Hard to argue with that; the Blackbird is indeed a beautiful piece of work. I once saw an SR-71 drop in on the Belle Chasse, Louisiana Naval Air Station back around 1988-89. I was in the right place at precisely the right time, driving along a highway near the Naval Air Station, when that unmistakable black shape glided overhead, its landing gear just beginning to lower. I was happy for a week. :-)

Wish this plane (which also rates a spot on the "sexiest aircraft list") had seen a production run; betcha it was really something to see in the air:

[Eric in the Ozarks]

I've seen a photo like this but can't recall what it was...
btw, I was not aware that the first Black Birds carried a small drone aircraft on the back of the airplane. From the rear of the plane (at the Museum), it looks like two humongous engines and a curious peewee engine in the middle.