Check out the Sesame Street Facebook App! www.facebook.com If you’re watching videos with your preschooler and would like to do so in a safe, child-friendly environment, please join us at www.sesamestreet.org In this clip, Cookie Monster sings about the letter ‘C’. Sesame Street is a production of Sesame Workshop, a nonprofit educational organization which also produces Pinky Dinky Doo, The Electric Company, and other programs for children around the world.