The good: Positive reinforcement is great for teaching your dog commands, and it's also a good way of reinforcing good behavior. You may have your dog sit
before letting him out the door (which helps prevent door-darting)
before petting him (which helps prevent jumping on people)
before feeding him (which helps teach him good meal-time manners).
Give him a pat or a "Good dog" for lying quietly by your feet, or slip a treat into a Kong®-type toy when he's chewing it instead of your shoe.