I think I might have already shared this video on another thread at some point, but its such a good tribute that it deserves to be posted again.
Star Wars: 40 years ago (35mm)
https://www.youtube.com/watch?v=y6nBtcFzS-k&t - from the Steven Thomas YouTube channel (4 mins long)
The blurb:
“40 years ago in theaters not so far, far away… George Lucas made a movie that changed movie industry forever.”