One of the cool things about Rogue One is how it links the story to the original Star Wars Episode IV and its characters. You watch the screen and then you realise you are looking at Peter Cushing acting out a new scene as Grand Moff Tarkin .
The thing is, he died in 1994, so its all the result of CGI. It seems to be the source of a lot of controversy online. I remember thinking when I starting seeing CGI in films and animated films like Toy Story, that it wouldn’t be too long before they could revive an actor from the dead and have him/her act in a film long after their death. Looks like that time has arrived.