Watch Full Movie Online. With the help of his Sesame Street friends, Big Bird leads Snuffy on a fun-filled trip through the alphabet. Cookie Monster sings the praises of "C" (for "cookie," of course), while Oscar loves "I" and "icky ice cream cones." Special guest Lena Horne joins in on all the musical fun as well. Whether you have a favorite letter, or love'em from A to Z, you'll find them all here in delightful alphabetical disorder.