We've been over this. The best part of Guardians of the Galaxy is an alien tree named Groot who is voiced by Vin Diesel. It's as simple as that, and if you hear friends and family running around saying, "I am Groot," well, that's why. We've collected all the various "Groot"s uttered by Diesel himself and put them in a handy soundboard. Now you can relive the magic again and again and again (and in Mandarin!).