When it comes to bookstore events, August really is the cruelest month. Here’s a few things I found interesting this month for one reason or another. Barnes and Noble 08/06 Dan Balz: Collision 2012 Obama vs. Romney (82nd & Bway) 08/06 Chris Colfer: The Land of Stories The Enchantress Returns (USQ) 08/07 Graham Rayman:…