Allison Holker and Maks Chmerkovskiy chatted with “Extra” about the return of “So You Think You Can Dance” for Season 18! They dished on the changes in store and how viewers will get to see more behind-the-scenes, docuseries-style moments with the contestants. They also talked about why they are hard on the dancers as judges and if we'll see them hit the stage. “So You Think You Can Dance” airs Mondays on FOX.
