The name of a work is part of the work, just as a person's name is part of who he is, and even helps define that person. A more unusual name also alters the way a person views a work of art. "Gray Buildings" vs. "The Last Memento from a Torrid Love Affair" evoke radically different thoughts when looking at the work itself. In my experience the unusual name helps the viewer engage with the art more. So I think a lot of thought go into a name - it shouldn't be chosen off the cuff.