Today, Rex takes a look at AECOM (NYSE:ACM), which carries one of the lowest price-to-earnings multiples of all the stocks passing his "Best Values" screen. Is the architectural and engineering support firm a value, or a value trap?

Meanwhile, if you're looking for something different, check out our new free report, The Motley Fool's Top Stock for 2012. In it, our chief investment officer identifies his favorite company for the year. To access the report before the rest of the market catches on, click here -- it's absolutely free.