When the go route works, it's a thing of beauty. Forty or 50 yards at a clip, if you're at home, the crowd goes nuts; on the road, it sucks them dry. And after a big bomb, the defense seems to shrink. But it's risky. If you hit it one time in five, you're doing pretty good, so you do it sparingly, like playing the lottery. It keeps the dream alive, and, in NFL speak, it keeps the defense honest. If you've got a blazing-fast wide receiver like Torrey Smith on your squad and a cannon-armed QB like Joe Flacco, you show your hand every once in a while, you put it out there, and the defense has to plan for it, keep a safety back and out of the box, which allows you to throw underneath of him or run with one less man to beat. You plan to do it every couple of weeks, once a game, tops. Maybe when it's second down and short, you throw it in there, like picking up that scratch-and-win. If you get it, gangbusters. If not, well, you only need 2 yards and you've got a human wrecking ball in the form of fullback Vonta Leach and a dude named Ray Rice to follow him. It's low-risk, big reward.