The sparring of Luke Skywalker of Star Wars with a floating battle droid, may lead to a "droid invasion" of the International Space Station (ISS). One is already up there! Called SPHERES (Synchronized Position Hold Engage Re-orient Experimental Satellite), the mini-satellites serve as a test bed for trying out experimental software to control clusters of satellites.
MIT undergrads have done the design and building.
Meet their Droid no. 1 here.