Darth Vader wasn’t the only one who had a voice double.

I was so surprised to learn this fact about R2-D2. “In early drafts of the script, R2-D2 could speak standard English, and had a rather foul vocabulary. Although all of R2’s English speech was removed, many of C-3PO’s reactions to it were left in.” It really makes you wonder if the R2-D2 character would have been as beloved as it is now if George Lucas had stuck to his original script. Source IMDB trivia http://www.imdb.com/title/tt0076759/trivia?item=tr0742801