Melissa Benoist, Chyler Leigh, Calista Flockhart, Jeremy Jordan, Laura Benanti, David Harewood, Dean Cain, Helen Slater, Faran Tahir, Mehcad Brooks, Owain Yeoman, Derek Mio, Preston James Hillier, Ben Begley, Jenna Dewan-Tatum, Malina Weissman, Scott…