Jabba’s palace blew my mind when I saw it in widescreen on the sci-fi channel around the buildup to the special editions. They also showed the extended Abyss which is where I saw it first. I was in high school.
Same here! I’d only seen the films pan-n-scan before that.
In fact, this was also when I realized what the difference between PnS & widescreen was! So my mind was doubly blown!