I enjoy those elements that give me the biggest emotional connection to the students. For example, this comes out in student papers, when they reveal their true perception of the party they negotiated with. This may not necessarily be fun for the students, though. There is a version of the course offering that uses a game theoretic approach. We recognize that there is a diverse audience here at Columbia.
Some students prefer a more mathematical treatment.
The inherent nature of negotiations requires handling ethical issues. Some deals in business might lead you to bluff or to stretch the truth. Other situations put you in the position of an agent negotiating on behalf of a principal. Also, in negotiations, you might be representing the interests of parties not present at the table. Many of these situations lend themselves to simulations that touch upon issues of ethics.