Ever seen a rocket land? This is beautiful, the successful re-landing of a first-stage space rocket, landing it on a small platform floating in the ocean. I can hardly imagine the number of calculations to be done to do this, and the number of things which have to go right. But if you like science and space, or just a graceful engineering feat, this is a good one. (The video starts at the time point with this landing, but there is much more in it.)
By the way, I think it's so kewl that the landing platform is called "Of Course I Still Love You". Why? Because it's an obvious homage to the late SF author (one of my top faves) Iain M Banks. The name was one of the first and best of the many cheeky and inventive names he gave to his intelligent (and often collosal) spaceships in his space opera Culture novels.
If you like science fiction, especially on a very big canvas (huge), and haven't tried Iain M. Banks, then you are in for a treat.