One of commenters mentioned Mark Driscoll's first sermon on Ecclesiastes, which is very good. I've just finished listening to his sermon on Ecclesiastes 2:1-11 which was excellent. It's somewhat Piperesque at the end, and I mean that as a big compliment to both Piper and Driscoll. Really good stuff. Download all of Driscoll's sermons on Ecclesiastes.
By the way, I have the honor of being the #1 Google hit for "Piperesque."