Movie you remember seeing in a movie theater?

For me that would be the original Star Wars (A New Hope) in 1977. I distinctly remember seeing it in the summer so I wasn't quite 5 years old yet but I have several vivid memories of that evening. I remember arguing with my mom because I told her they were putting "gasoline" inside the X-Wing fighters before the final assault on the Death Star and my mom said they weren't really putting anything inside of them and then I replied "duh, yeah they are a pretending. I know!". I also remember some guy sitting behind me saying in Spanish "usa la espada estupido". This was during the scene in the Death Star trash compactor when Luke gets dragged under the water by the Dionaga.

“Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you.”