Guest Stars Jack Black as Himself Rose Leslie as Herself Emilia Clarke as Herself Jennifer Aniston as Herself Neil Patrick Harris as Himself Nikolaj Coster-Waldau as Himself Kyle MacLachlan as Himself Mark Addy as Himself Christian Slater as Himself Kellan Lutz as Himself Andy Cohen as Himself Peter Dinklage as Himself Kit Harington as Himself Jodie Foster as Herself Michelle Rodriguez as Herself Matt LeBlanc as Himself Reese Witherspoon as Herself Helen Mirren as Herself Alfie Allen as Himself Julia Roberts as Herself Will Ferrell as Himself Gwyneth Paltrow as Herself Jimmy Fallon as Himself Richard Gere as Himself Diana Rigg as Herself Josh Groban as Himself Ed Sheeran as Himself Al Roker as Himself