The following video is part of our "Motley Fool Conversations" series, in which Chief Investment Officer Andy Cross and analyst Michael Olsen discuss topics across the investing world.

In today's conversation, Andy talks to senior analyst Mike about an unknown, underappreciated, and misunderstood insurance broker that is not only a cash flow machine but a super cheap stock. Join us to learn more about Aon and why it deserves a spot in your portfolio.

Every now and again, we come across a stock that has us so excited we can hardly contain our investing enthusiasm. We've uncovered one such pick with so much promise that we've dubbed it "The Motley Fool's Top Stock for 2012." We've created a special free report for investors to uncover this soon-to-be rock star. The report highlights a company that is revolutionizing commerce in Latin America, and you can get instant access to the name of this company by clicking here to download it now.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.