Sick and tired of celebrities who star in commercials? Who has to be in the last ever celebrity starred ad?

Do you also sometimes get sick and tired of all those celebrities who do ads for commercial products or show that they are so involved with all kind of good causes or urge us to donate for victims of nature disaters (which in itself is a good thing, the donating).
If there was a sudden agreement among said celebrities that they will from now on never star in these commercials again, who, in your view, is the elected/favorite one to do this, slightly paradoxal, last commercial in which he/she announces that they’ll never do it again?