During the 2001-2002 academic year, Augustana College Library (Rock Island, IL) and St. Ambrose University Library (Davenport, IA) began a unique joint venture of peer observation between the reference staff members of the two libraries. Librarians from each college took turns visiting the other library and conducting peer observations of reference desk service. Although the reasons each library had for initiating this venture differed, both libraries benefited from this project. This article discusses the development of the program, the results, and plans for the future. (Contains 4 tables.)