Stephen 'tWitch' Boss Shows Off Dance Moves, Talks 'SYTYCD' Finale

"So You Think You Can Dance" all-star Stephen "tWitch" Boss recently stopped by Universal Studios Hollywood to teach "Extra's" Renee Bargh some dance moves. Stephen also gave us a sneak peek of the upcoming "SYTYCD" finale, and chatted about the epic dance sequence at the end of his latest movie, "Step Up All In."

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