Celebrating 40 Years of Sesame Street
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Elmo Was Behind the Scenes
Elmo, a kids' favorite, didn't debut until 1984, but if you look closely, you'll see he's worked as a background Anything Muppet since the early 1970s. He is also the only Muppet in history to have testified before Congress. Twenty-five years after he appeared on the scene, Elmo is still only 3 ½ years old.