Rogue One: A Star Wars Story

Gareth Edwards and his creative team discovered some old film canisters while rummaging around the Lucasfilm warehouses. When he asked what they were, an employee said they were old Star Wars (1977) footage. The discovery led to the inclusion of unused Episode IV material featuring Red Leader and Gold Leader in this movie.

During the space battle over Scarif, in one shot of Gold Leader's Y-Wing cockpit, the edge of the Death Star's equatorial trench can be seen through the back window of the cockpit behind him. This is reused footage from the rebel attack on the Death Star from Star Wars (1977). Actually, while it is re-used footage, the background has been digitally altered to be the shield gate.

Hidden in the credits is the title "Keeper of the Holocron." A Holocron is a cube-like artifact used by the Jedi to store information that were first mentioned in the Dark Horse comic book series 'Dark Empire. On the official Star Wars site Leland Chee was in charge of continuity and received the honorary title of 'Keeper of the Holocron'.

Edited into If Star Wars Wasn't Serious (2014)