One the key points about Stuff White People Like is that it makes white people realize they actually have culture. Really, "white people" means White (US) Americans (and maybe White English-speaking North Americans). Because white culture in The Netherlands, Germany, The British Isles, France, and Spain are quite different from each other as well as from The US. In US media, non-white groups are known to have culture: Black Culture/African American Culture, Asian Culture, and so forth. The dark side of this tendency is to assume "white" culture is the de facto norm and therefore is not a culture.
Stuff White People Like has shown that white people are in fact a recognizable culture. And as TJ's post notes, it's a culture with some positive history and current beneficial elements (as well as horribly dark history).
And this is a deeply postmodern insight. Postmodernism sees the world consisting of linguistic cultures. Cultures create worldviews in their members through common social practices, ways of relating interpreting life, and forms of bodily being. The other core insight of postmodernism is that no culture should be considered the norm. No culture should be hegemonic, including and especially white culture. But on the other hand, every culture (including white North American) has a place. Cultures are different from each other and quite unique in many ways.
The study of white culture (whiteology?) shouldn't be treated differently than any other culture--either positively or negatively.
