A great book I read recently from the Pragmatic Programmers is Behind Closed Doors: Secrets of Great Management. I highly recommend this book to anyone who is either a manager or executive or aspiring to some form of a team leadership role! It lays out the day to day with a very realistic technical leadership role in an example company. It also shows how to apply some XP style planning to the prioritization and release planning process with a medium sized team.
My only complaint with the book is one sentence where they recommend feature boxed over time boxed releases which I generally disagree with.