This was really cool! I never got super into Mortal Kombat (or fighting games in general), but it was a huge deal when I was a kid so I can't exactly deny its impact. This made for a fascinating watch.
I just have a vague memory as a child (like, five years old or so) of renting the first game on Genesis from Blockbuster and somehow getting into some attract mode where it played all the characters' fatalities, and it creeped me out to the point where I shut the game off and didn't play it for the rest of the rental period. I did have fun playing it before that, though!