Jambe Davdar has assembled a plethora of behind-the-scenes Star Wars material, including interviews with cast and crew, as well as deleted scenes and outtakes, and has constructed awesome documentaries over Empire Strikes Back and Return of the Jedi (why A New Hope gets no love, I have no clue). Here are the first installations of each documentary, I'm sure you all know how to navigate YouTube to find the rest.
Returning to Jedi
Found the commentary for A New Hope.
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