Any aircraft in history, you get one flight. Take your pick.
I'm torn between two- Concorde, and the de Havilland Hornet.
The speed and power of the Concorde would be unbeatable. I still think it's one of the most remarkable types designed and built, from a technology point of view. Immediately identifiable to even many non-aviation types, it was far from a major success, but was still an icon of air travel. It made a huge impression on me as a kid getting into aviation. I'll only ever walk through one in a museum now, but I still hold out hope that I'll manage to snag a slot in the working simulator at the Brooklands Museum in England.
Far lesser known is the Hornet, the sibling of the legendary WWII Mosquito. Described by Eric Brown as one of the best aircraft he had flown, it was an overpowered and well balanced fighter that got caught in the awkward gap between the end of WWII and the true emergence of jet fighters. Not a single complete example exists. Simple proof of "if it looks good, it flies good".
