In my continuing efforts to "secularize" my Bible belt school's senior class, I have my students reading an essay about writing from Stephen Fry this coming Tuesday (how I slipped a homosexual atheist writer past my literacy facilitator/censor is beyond me.) So today, we had rather light attendance due to some snow/sleet this morning that delayed school opening by two hours. So, rather than give half the class a quiz, knowing that I'd have to give the other half of the class the same quiz come Tuesday, I decided to introduce them to Stephen Fry by showing them the first episode of "A Bit of Fry and Laurie." We were sitting there watching the very first skit (all of the kids were stunned to find out that "House" has a British accent, by the way) and suddenly one of the kids piped up and said, "Dang, dude sounds like my mom arguing why I didn't need to learn about evolution in biology back in 10th grade!" It was a proud moment when they made the connection!
Another way is to push undeniably Christian writers that they don't like. MLK, would be a good one. Michael Moore as a high school student in Davison MI (all white back then) won an election to the school board and proposed renaming the high school Rev. Martin Luther King H.S. He lost the next election, but I live 10 miles from there and that school is entirely secular (and far less racist) to this day 50 years later.