The current wave of worldview thinking among American Christians has been generated primarily by what is sometimes called the "neo-Calvinist" tradition which was given shape first by Abraham Kuyper and then later by Herman Dooyaweerd. Many, many other Christians have helped shaped the current worldview movement and many of them are not Reformed. But these two Dutchmen stand out as major thinkers in forming the current discussion, even if most people have never heard these names.
But the current books, web sites, and seminars devoted to discussion of Christian worldview thinking are primarily located within the American context. It's always good to expand one's horizon and see what Christians from other locations in the world are doing to shape a Christian culture.
These South Africans, for instance, offer some thoughts on art, culture, faith, and politics, thoughts that sometimes sound like what you would hear in America. But sometimes their literal and figurative distance from America offers some Christian ways of responding to the world that can energize our own.