The "magic" of magnets have been observed for quite some time, but it's not actually an easily explained phenomenon that magnets can repel and attract
in various configurations. Still, we can take advantage of this property of magnets, and create some amazing tricks of levitation that seemingly defy gravity. We could have a commercial hoverboard for kids to play with (as an actual toy) pretty soon, and we could potentially have some other even cooler devices based on "hover" technology. If only we could get a Mr. Fusion device together....
If you'd like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post