MIT graduate student Arnav Kapur has developed "AlterEgo," a head-worn device that works when the user internally vocalizes a specific command or question. Electrical signals that your brain normally sends to the vocal cords are then intercepted and sent to a computer, which communicates with the user's inner ear through vibrations. No word yet on if this technology will eventually be commercialized. Click here for the first image in today's viral picture gallery. Continue reading for the five most popular viral videos today, including one of the most expensive machines in the world.