One of my favorite Christmas gifts to give or receive is a book. It is the ultimate gift that keeps on giving. Here is a list of my top 20 leadership books. Some are academic, other are anecdotal in nature, while a few are written in a business fable format. Buy one for yourself and one for the colleague you most relied on in 2011. Merry Christmas. Lincoln on Leadership, Phillips, Warner Books The Servant Leader, Neushel, Visions Leadership Jazz, DePree, Currency Doubleday The Leadership Challenge, Kouzes Posner, Jossey-Bass Christian Reflections on the…