Will Apple (NASDAQ:AAPL) and Nokia (NYSE:NOK) take a bite out of Research In Motion (NASDAQ:RIMM)? What can investors learn from Warren Buffett's investment in American Express (NYSE:AXP)? And should energy-hungry investors take a look at W&T Offshore (NYSE:WTI), Colfax (NYSE:CFX), and Global Industries (NASDAQ:GLBL)? In this installment of "Fool Video," online managing editor LouAnn DiCosmo talks about some stories on the Fool radar.