Why not ditch the curriculum for a few days, and ask them what THEIR deepest questions are? Do they wonder about dating, sex, and relationships? ...terrorism and death?... their parents' divorce?... extistential questions re: worldview? Find whatever keeps them up worrying at night and show how Christ offers the only workable answers. Then you'll get some enthusiastic students.
In fact if you look around, there are gospel "hooks" all over pop culture. For example, here are 2 that will warm your Catholic heart: Marian Images in Buffy the Vampire Slayer and Marian Images in The Terminator