Actor Quotes and aphorisms about where Robert De Niro Robert De Niro Sean Penn Sean Penn Denis Leary Denis Leary Denis Leary ,, In my experience in series TV, if you have a good crew and a great cast, it's going to be a great g... Denis Leary Denis Leary ,, Certain movies like 'Wag The Dog,' we used improv on every scene that we did. Pretty much, we would... Denis Leary