I just finished Jack Whyte's "Standard of Honor". If you like historical fiction and are interested in the time period around the Crusades I would highly recommend it. This is book 2 of a planned Trilogy on the Knights Templar and I can't wait for the third book.
http://www.jackwhyte.com/
I really enjoyed his previous books where he took the King Arthur legend and tried to set it in history. Unfortunately they're not don't seem to be available as ebooks.