Ecclesiates has always been one of my favorites books in the Bible. I love the way that solomon shares his own thoughts and fears on life.
Khouse have just put an article online about the book. Here's a quick quote:
"Ecclesiastes is different from any other book of the Bible. It does not dwell on the covenant, the election of Israel, redemption, prophecy, sacred history, or the temple. Its focus is on man the creature, his life on earth, and the inscrutability of God and His ways. Ecclesiastes goes beyond the other wisdom literature to emphasize the fact that human life and human goals, as ends in themselves and apart from God, are futile and meaningless." - Read more at Koinonia house