AdvertisementScience Of Sadness And Joy: 'Inside Out' Gets Childhood Emotions RightJune 13, 2015Jon HamiltonNeda UlabyfacebookEmailJoy (left, voiced by Amy Poehler) and Sadness (voiced by Phyllis Smith) catch a ride on the Train of Thought in Pixar's Inside Out. The movie opens in theaters nationwide June 19. (Disney/Pixar)