"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 'tWitch' Boss Shows Off Dance Moves, Talks 'SYTYCD' Finale
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."


The "So You Think You Can Dance" finale airs Wednesday, September 3 at 8 PM on FOX. Head over here for a full preview.