Ah, such strangeness the internet brings. I'm more used to seeing variations on Lucky Star or The Melancholy of Haruhi Suzumiya, but this is a new one on me. Apparently, this one-- the newest thing?-- is called the "NewS CM dance," and is gaining popularity as a video meme over at Nico Nico Douga.
The first video is the Rockman X8 version, while the second is the original. They are both brief, running at 30 seconds. But if you want to see how they compare, hit the play button on both at the same time, and be amazed.
News Credit: Protodude's Rockman Corner