A Knight of the Seven Kingdoms by George R.R. Martin [Kindle, Amazon]
Three short tales of a Hedge Night and his squire in the world of A Song of Ice and Fire, taking place 100 years before the events in Game of Thrones.
This has the same high quality of writing you find in Game of Thrones, but not as epic in scale. Well worth a read, and Mr. Martin promises further exploits of Ser Duncan the Tall in future works, which I would welcome, but I guess everyone would really like him to get back to the main storyline. We’ll see how it goes.