In this era of globalization, English is unquestionably the dominant communication language all over the world. As Hung (2002, cited in Kuo 2004) has highlighted that ”globalization is the globalization of American culture” and as Tang suggested in 1999 that ”language and culture are inextricably linked”, the introduction of culture, especially the American culture, has been increasingly gaining importance in ESL/EFL education. Based on these notions, the present author has offered the course ”American Culture and Life Styles” first as an optional course for English majors and then as a choice of ESP courses for non-English majors in Chung Hua University. This paper is a report on the course design and students' reactions and reflections for the course. Findings are hoped to provide ESL/EFL teaching professionals some references when teaching the fifth important language skill, namely cultural understanding. Future research directions are suggested in the final part of the paper.