Mark Lauterbach's article People, Not Culture in the May 2009 issue of NEXT is a helpful piece for those who are thinking through how to relate to the world around them. Lauterbach writes,

But I want to suggest that this question–“How should a Christian relate to culture?”–may be the wrong question. This may be the wrong place for us, as Christians in the middle of culture, to start. Here’s why: I am not sure how I am to relate to the culture, but I am sure I am to relate to people outside of Christ for the sake of their salvation

You can read the full article here.