This video starts off tame enough. It's just an average imaginary virtual reality with Hatsune Miku backed by fake (but pretty impressive) interactions thanks to the Oculus Rift and the Razer Hydra motion controller. Then, around the 3:30 mark, an oversized Nendroid Miku appears and all hell breaks loose.
Did you know you can play The Elder Scrolls V: Skyrim with motion controls? You can! Here's the Razer Hydra, Razer's motion control peripheral, playing through Skyrim.