Spring has sprung on Sesame Street, and merry Muppet Elmo is celebrating three of its primary ingredients -- birds, bugs and bicycles -- in this seasonal charmer. Blending silly TV spoofs ("The Loon Ranger," "The Dick Van Bike Show") with interactive games, sing-alongs and footage of kids and animals, Springtime Fun is just what its name implies: fun! Lest you fear, it's also educational, teaching tykes about the colorful world around them.