Yes, that’s Anderson Cooper on “Sesame Street.” He taped the segment this week; it airs next September. CNN aired a preview at the end of Wednesday’s 360.

According to an e-mailer, Cooper “pops out of Oscar’s trash can with ‘GNN’ mic to interview ‘Dan Rather-not’ and ‘Walter Cranky,’ who, in typical grouch style, insults 360 and refuses to answer his questions (Cooper: ‘You’re supposed to answer the questions!’ Rather-not: ‘I’d RATHER not…argh!!!!’).”

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