Rabbi Reinman, an Orthodox rabbi, co-wrote a book of e-mail correspondence with Ammiel Hirsch, a Reform rabbi, titled, "One People, Two Worlds: A Reform Rabbi and an Orthodox Rabbi Explore the Issues That Divide Them" (Schocken, 2002).  This interview is the first of four parts, covering topics such as intermarriage, Ameican politics, and the major difference between Judaism and Christianity, among many more.