Mankiw suggests that this intelligent Wendy's ad illustrates well the economic concept of consumer surplus. I concur, and would add that it also illustrates concepts such as the costs of time and decision making.
I am an assistant professor of economics at Ohio University, where I teach many economics/finance courses. I use this blog to clear my thoughts on the current economic and political issues.
I received my PhD in Economics from UCSD and I am a CFA charterholder