If you are going to lead then you have to read. Readers are learners. When you stop reading you stop having anything new to say.
Outside of my required reading for my Masters program, here are a couple of ministry books that I've been into this summer: I finished "Leading from the Second Chair" - a book about being the best 2nd level leader you can be for your organization; now I am into "Simple Church" by Thom Rainer. The subtitle on this one is, "returning to God's process for making disciples".
Reviews: Second chair was a decent read although I found myself skimming and looking for the real meat of the issue a few times. I would say it is a recommended read for anyone who feels like they will always be an assistant to someone or for anyone who struggles with following someone elses vision, etc. Simple Church is actually very good. As usual, Rainer has done gobs of research and has found that churches that do less are more effective for the kingdom than program heavy churches. I recommend it for pretty much everyone. It would be a good book to go through with a church board.
What are you reading?