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03:31 — After just a week of training, Nicole Scherzinger and Alan Ritchson perform a gravity-defying AiRealistic routine.
02:54 — Joe Jonas and Nicole Scherzinger reunite for the most dangerous act yet.
03:38 — Nicole Scherzinger and Jeff Dye put their lives on the line for a stunning performance.
Who'll dance it better: Cheryl Burke, Seth Green and Joe Jonas or Jeff Dye, Jenna Elfman and Michelle Trachtenberg?