Marge is responsible for getting Jack Crowley,a prisoner with artistic talent, parole and a job at the school,painting a vast and beautiful mural. However Skinner dislikes it and orders a twee replacement. Both the new mural and Skinner's car are consequently torched and Marge is dismayed to think that Jack let her down. Homer experiences a similar lack of success when he tries to market a trash can as a cure for back pains.
—don @ minifie-1