 He is the creator of the Nick Jr. series Oswald and Willa's Wild Life (Qubo and NBC), as well as the character designer behind Nick Jr.'s the Backyardigans.Yaccarino’s illustrations have adorned the pages of such publications as "The New York Times", "Rolling Stone", "Seventeen", American Bookseller, "Working Woman"
"Travel & Leisure", Business Week, Vegetarian Times, Network World, Psychology Today, Texas Monthly, Yoga Journal and "New York Magazine".He has created images for a wide variety of corporate projects and advertising campaigns as well, including Cotton Inc, AT&T and Gardenburger.