Edward J. Blum
Real quick update (please don't yell at me for breaking calendar protocol): more evidence of US religious history dominance: Matt Sutton just won the best article in the Journal of American History over the past year! This was for his article "Was FDR the AntiChrist? The Birth of Fundamentalist Antliberalism in a Global Age," JAH 98 (2012): 1052-74.
Here's the essay abstract.