This Randy Newman song came up on my ipod the other day and I really enjoyed it. It's a great song. If your sceptical go to 2:10 when the choir comes in and see if that helps. (PS I'm not touting the sentiments expressed in the lyrics, which are probably ironic anyway).
Bonhoeffer uses a similar phrase 'worldly Christianity'. It's J Gresham Machen that I want to line up most closely with. See his Christianity and culture here. Having done commentaries on Proverbs (Heavenly Wisdom) and Song of Songs (Heavenly Love), a matching title for Ecclesiastes would be Heavenly Worldliness. For my stance on worldliness, see 3 posts here.