The View from Saturday by E.L. Konigsburg - Mrs. Olinski, returning to teaching after having been injured in an automobile accident, finds that her Academic Bowl team becomes her answer to finding confidence and success.
David and Goliath: Underdogs, Misfits, and the Art of Battling Giants, Malcolm Gladwell. Some people say Gladwell's a hack but I'm not buying it. If you've enjoyed his previous works you've got to read this one!
Critique of Practical Reason (Hackett Classics) by Immanuel Kant