4. Emmitt Smith (HOF Class of 2010)
The NFL’s all-time leading rusher certainly wasn’t the flashiest. Smith didn’t overwhelm defenses with speed, size, or power — his best attribute was his excellent vision. Although he didn’t possess the same talent as some of the other backs on this list, Smith made up for any physical shortcomings with his durability and toughness. Smith seemed to get stronger as the game went on, often punishing tired defenses in the fourth quarter. Smith rarely missed time due to injury. As a result of his durability, he finished his career with more rushing yards (18,355) and touchdowns (164) than any running back in NFL history.