I have always loved & appreciated practical special effects. I'm also very interested in many of the artists & craftsmen who are involved in their creation, so finding out more about how they were achieved is a given.
Ridley Scott's Sci-fi movies are a prime example of this. Just look at the list of amazing artists, designers & technicians who have been involved with ALIEN, Blade Runner, PROMETHEUS & ALIEN: COVENANT. The Alien, the SJ & his derelict ship, the Hades landscape, Spinners, the Prometheus hangar & bridge, the Engineer head, the amazing contents of David's lab, to name but a few of their mind-blowing creations.
What I wouldn't give to have been able to visit any of those sets!
Another great example is John Carpenters The Thing. Rob Bottin was only 19 years old, yet Carpenter trusted him with what turned out to be truly awe inspiring, experimental creature designs. Some of the components Bottin used turned out to be highly flammable & toxic. Often a case of trial & error, what an unprecedented opportunity Bottin was given. A large part of the films success rests upon his incredible creature design.
Many technicians are problem solving, inventing & evolving as they work.
The in-camera photographic effects work for Blade Runner has to be one of the best examples to research. It makes the finished product appear even more incredible.
The art of practical effects were almost lost forever. Luckily, the film industry has now seen the benefits & sense of combining modern practical effects with the latest digital technology.
So for me, finding out more about the painstaking skill involved in bringing those effects to the screen is part of the magic.