He teaches courses on world religions, religion in America, new religious movements, and the intersection of religion and popular culture. He is the author of several books including Dangerous Games: What the Moral Panic Over Role-Playing Games Says About Play, Religion, and Imagined Worlds (University of California Press, 2015) and The Seer of Bayside: Veronica Lueken and the Struggle to Define Catholicism (Oxford University Press, 2014). He is also a blogger for Religion Dispatches.