Bob Pittman of 6 flags entertainment found that the janitors were surly with customers. He went undercover and found managers were ordering that the parks were kept immaculate. The janitors therefore saw customers as a problem, as they were stopping them from achieving their objective.
Pittman changed the objective to keeping the customers happy and since a dirty park would make their time less enjoyable, they cleaned it up but in a friendly manners.
Now that is using goals in a great way and shows how even mundane tasks can be linked to a grander purpose.