James Lafferty; Chad Michael Murray; Hilarie Burton; Sophia Bush; Bethany Joy Galeotti

Michael Ealy; Oded Fehr; Henri Lubatti; Melissa Sagemiller; Jake Soldera; Blake Shields; Michael Desante; Thekla Reuten; Omid Abtahi; Kevin Alejandro; Jay R. Ferguson; Sonya Walger

Michael Ealy; Oded Fehr; Omid Abtahi; Kevin Alejandro; Carlos Gómez; Michael Desante; Thekla Reuten; Jay R. Ferguson; Angela Gots; Megan Ward; Sonya Walger; Susan Par

Greg Morris; Bob Johnson; Peter Lupus; Peter Graves; Martin Landau; Barbara Bain; Leonard Nimoy; Lynda Day George; Steven Hill; Lesley Ann Warren; Sam Elliott; Jack Donner; Sid Haig; Lee Meriwether; Barbara Anderson; Joseph Ruskin; Arthur Batanides; David

Joseph Morgan, Daniel Gillies, Claire Holt, Phoebe Tonkin, Charles Michael Davis

Mark Harmon; Pauley Perrette; Michael Weatherly; Sean Murray; Cote de Pablo

Ellen Pompeo ; Sandra Oh ; Katherine Heigl

Ellen Pompeo ; Sandra Oh ; Katherine Heigl

David Hasselhoff; Edward Mulhare; Patricia McPherson; Rebecca Holden; Peter Parros; Pamela Susan Shoop; Shawn Southwick; Ann Turkel; Jack Gill; Brian Cutler

Ellen Pompeo ; Sandra Oh ; Katherine Heigl

Lena Headey; Peter Dinklage; Emilia Clarke; Maisie Williams; Kit Harington; Iain Glen; Sophie Turner; Nikolaj Coster-Waldau; Rory McCann; Charles Dance; Alfie Allen; Jack Gleeson; John Bradley; Isaac Hempstead Wright; Aidan Gillen