What Are Your Favorite Google Videos of All Time?

Google dabbles into a lot of interesting things. From driverless cars, to artificial intelligence, quantum computing, world-wide internet, HUD's, etc. They have a lot of videos that showcase what they do, most of which prove at least in my opinion, why they're one of the most forward thinking companies in the world. So with Google I/O 2014 coming up very soon, I want to know, what are your favorite google videos of all time?

Mine would have to be their "Quantum Artificial Intelligence Lab", closely followed by the "Google Interns First Week". Feel free to share yours below.