#Hughes H-1 Racer, one of the fastest airplanes of its time. And, of course, it looks great.
B-29 Supefortress bomber of the type that dropped the atomic bombs on Japan. These were an improvement over the B-17s', for among other reasons they were pressurized. They were designed for high altitude bomber but ironically were used at low altitudes to be more effective.
See more HERE: https://www.sunfrog.com/trust-me-im-an-engineer-NEW-DESIGN-2016-Black-Guys.html?53507 Ekranoplan Casspian The Russian Tank-Ship-Plane. Not exactly a plane but still cool. It flies just over the water because of ground effect. So it can haul a heavy load very efficiently compared to getting it up to altitude. Or floating.