Who was the man seen leaving the Kent Farm, waving goodbye to Martha, just before Superman crashed back to Earth?
That was Ben Hubbard (played by actor James Karen). Ben is Martha’s neighbor, who, it is revealed in “Superman: The Movie”, was asked by Clark to help out with the farm after Jonathan Kent died and Clark had to go “north” to create his Fortress of Solitude. Ben and Martha formed a close friendship in Clark’s absence. Hubbard can also be partially seen standing next to Martha Kent outside the hospital at the end of the movie.