For 2 seconds, the trailer for the new Star Wars movie, The Force Awakens, shows an astromech with a spherical lower body. It quickly rolls across the desert, then disappears from the screen. That droid has been the subject of much fascination in the internet.
What's so exciting to fans is that although this is the first time that the droid has appeared in a Star Wars film, it has already appeared in a George Lucas film. It was in the Indiana Jones film Raiders of the Lost Ark. So it is something of a homage to the founder of Star Wars.
-via Moe Lane