THX 1138 is a 1971 movie and was the first feature movie directed by George Lucas and executive produced by Francis Ford Coppola and Coppola's production company American Zoetrope.
It was based on a short film Lucas made in college in 1967 called Electric Labyrinth THX 1138 4EB.
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Hans Memling's Christ Giving His Blessing (1478) is used as the visual representation of the state-sanctioned deity OMM 0000.
The George Lucas Director's Cut includes completely new footage, as seen in this shot of the factory where THX works.