Over at Baseball Nation, Rob Neyer has posed a simple, but difficult question: who is the greatest hitter in baseball? Rob's narrowed it down to Ryan Braun, Josh Hamilton, Joey Votto, Miguel Cabrera, and Matt Kemp. But the real question here is - how do you identify what makes someone the greatest hitter? What stats would or should you use? How recent should the data be? Share your thoughts here or over at Baseball Nation.