John Piper has started a new, daily radio program that bears your attention. You can listen to it online at Desiring God Radio, or check local listings for airings in your own area.
Piper's radically biblical message of the supremacy of God in all (and he does mean all) things might prove to be shocking to ears used to being tickled by the contemporary pablum featured on so many preaching broadcasts today.
You'll be challenged and inspired. Tune in and spread the word.