Dragonfly is so cool I can hardly stand it: It's a quadcopter, with four pairs of coaxial propellers each mounted at the corners of a 3-meter-long lander. The idea is that it can land in one spot on Titan and then fly in short 8-kilometer hops to other places where it can perform scientific measurements.
This sounds more interesting to me than humans on Mars. Well except if I am amongst these humans. But let that sink for a moment how much of a step-up this will be to the driving robots on Mars and the Moon. I am so pumped-up about this Dragonfly mission.