I'll jump in here to say that I seldom title my photographs, mainly because I find it difficult to find a useful title that doesn't give too much away. I want the viewer to use his/her imagination , so I don't like to use a title that will slant the interpretation in one direction.
That being said, I do have titles for some of my favorite images, sometimes the name of an object in the scene, or the location, and other times a fanciful, totally irrelevant title intended to make the viewer work a little harder trying to figure it out.