Via Starwars.com:
Star Wars wouldn’t be the same without droids. Astromechs, protocol droids, GNK power droids — they all have a role to play within the galaxy, some more important than others. C-3PO and R2-D2, for instance, are key players throughout the Star Wars saga. They appear in all six films, in Star Wars: The Clone Wars, in Star Wars Rebels, and are slated to show up in Star Wars: The Force Awakens. The duo is often important to the story’s progression, and in fact, the continuation of the plot has been contingent upon R2-D2 jumping into action and being the hero more than once.
The devoted and resourceful astromech has pulled Anakin Skywalker, Luke Skywalker, Leia Organa, and many others out of certain danger and/or death repeatedly. Artoo deserves a medal just as much as Chewbacca. Here are seven times R2-D2 has saved the day:
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