Book Titles

These blog posts are usually the result of something I'm exploring. It gives me a chance to improve. I say this so you will understand, because I can't come up with cool book titles. I stink at it! I have half a million stories and they all have dumb names. For instance…

The Trouble with Elves
Mistake
Clouded City (or maybe Vivas?)
Four Magic Kids (yup, that's seriously how I think of it)
Suncursed
Spy (short and to the point?)
Ilios

Some of are worse than others, but all are unsatisfactory.

So what makes a good title? Something that catches your attention, something that pertains to the story and characters…hopefully something that embodies the book.
Some examples?