All three hosts of Blue's Clues reunited at this year's Macy's Thanksgiving Day Parade to sing the show's theme song with a giant inflatable Blue. Blue's Clues is a partially live-action, partially animated series that premiered on Nickelodeon in 1996. It follows a dog named Blue and her human companion as he tries to figure out what Blue is up to each day and searches for paw print-shaped clues that Blue leaves throughout the house.
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