Made with boring technology (PHP and a bit of JS) because it was fastest this way. An interesting technical challenge for me (still ongoing a bit) is cleaning the data. Some screen-scraping, a few APIs to integrate and still a bunch of manual labor for myself hunting for urls to relevant review sites and normalizing things. I ended up pushing most of this manual labor through another one of my projects (https://www.t4sk.dev) which is basically mechanical turk for your personal private microtasks.
Ive already used MovieNight.tips to discover several great 80s movies that I somehow missed while growing up. I hope it helps others as well.