Superconductivity & Magnetic Levitation is a very interesting and potentially practical discovery. Though not new, these videos from 2009 till now show just how much potential there is for future levitating devices. The most wanted is most likely the hover board.
In the first video, a flux-pinned superconducting puck levitates above a figure-8 track. The puck is accelerated using the motors from a toy race car track set (I used to play with these as a kid). The second video is similar, however Tel-Aviv University demos quantum superconductors locked in a multi-dimensional magnetic field. Cool right?