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In These Streets: Star-Powered 'Sesame Street' Skits We Love

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This year marks the 45th anniversary of Sesame Street, folks! Back in '69, it was the only programming targeted to target to urban kids of all races and nationalities, and it's still one of the most inclusive, progressive shows on the air. Oh, and their celebrity guest spots rule. Where else could you see Tina Fey as a "Pirate of the Can-Be-Reading" -- complete with a merry band of Bookaneers -- growling a song about the awesomeness of books? Or how about that Usher spot that went viral last fall, where he sang his own silky, croon-y version of the Alphabet Song with Grover, Elmo and Abby Cadabby (so catchy, it could've been released as a single).

From Ricky Gervais to Charlize Theron, we're addicted to these superstar Sesame Street skits.

[Photos: PBS]