I found this clever paper, amusing.
Abstract: This paper studies perquisites of major company CEOs, focusing on personal use of company planes. For firms that have disclosed this managerial benefit, average shareholder returns under-perform market benchmarks by more than 4 percent annually, a severe gap far exceeding the costs of resources consumed. Around the date of the initial disclosure, firms’ stock prices drop by an average of 2 percent. Regression analysis finds negative associations between CEOs’ personal aircraft use and their compensation and percentage ownership, in accord with Jensen-Meckling (1976) and Fama (1980), but both relations have small magnitude.