I was 7 when I saw ANH (as it would later be known as) in 1977.
It was my second ever film at the cinema and I remember during the Death Star run being so far on the edge of my seat I fell off.
As I got up I noticed everyone was leaning forward at the same angle.
When I saw the ANH:SE in 1997 I looked over my shoulder at around the same point and everyone was still leaning forward at the same angle.
Now that's what I call cinema, generations of audiences in italics.
But I preferred ESB from the moment I saw it.