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The Amazing Colossal Crossover was a 13.5-hour marathon that aired on Sunday, November 11, 2007 from 6am to 7:30pm.

The marathon featured episodes of The Grim Adventures of Billy and Mandy and Codename: Kids Next Door, along with two movies, "Operation: Z.E.R.O.", "Billy & Mandy's Big Boogey Adventure" and specials, leading up to the premiere of The Grim Adventures of the KND at 7pm. Plus, after The Grim Adventures of the KND, there's a 5-minute preview of the Cartoon Network original movie, "Ben 10: Race Against Time".

Schedule

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