Searching the New York Times I found the following article that is intriguing. It is a professor that auctions a $20 bill (similar to what Joe Baker demonstrates in his economics class).
There are eight students that participate in the silent bid. The students all engage in “co-opetition” both competing and cooperating. The options before them would be to bid together or against each other. If they bid together they all come out winners. If they bid against each other, only one would win the money (and the amount pocketed depends on the bid). I find it interesting that instead of creating a large Nash Equilibrium matrix with eight people making separate decisions, they decided to bid the same price. The only exception was Ashley who chose to bid on her own. In essence, there became two parties, the seven with the same price and Ashley.
I like this article and example because it shows the various choices before people and how they react to situations.