As you are probably aware, Bono of U2 fame is in the news in Christian circles for his recent interview at the Willow Creek Leadership Summit. 

One blogger had compiled a list that he considers to be the most Spirituality Significant Songs of Bono.  Take it or leave it. 

Link: Codex: Biblical Studies Blogspot » Blog Archive » My Top 10 12 Spiritually Significant U2 Songs.