I thought this post by Dr. Witherington was very interesting. He's countering the idea that God does things soley for His own glorification, and suggesting rather that God's character is fundamentally self-giving.
It's not a very long post, especially for expounding such a concept--he doesn't even really acknowledge the scriptures that stand in support of the other argument--but it was certainly worth reading and is worth considering.
"For God so loved Himself?" Is God a Narcissist?