I recently put together this NBMB TAS, so might as well drop it here:
Link to video
It started as sort of a pet-project to see if I could make a TAS to begin with, it was always something I wanted to try out, and this seemed like a fun opportunity to give it a go. In the end, it turned out way better than I expected.
Personally, I feel it doesn't quite meet the Zero Mission TAS standards set by Dragonfangs and Cpadolf, since especially the early game is fairly unoptimized due to my lack of knowledge about properly TASing sections, and using small time-savers. Just like every first attempt at a TAS, it gets much better as it goes on, and I did go back and sort of "mask" my errors for the early game by adding a lot movement to make it seem faster, at least. That said, there is a fair bit of well-TASed stuff in there too, and sometimes even some improvements over current runs.
About NBMB. The goal is to collect the most amount of items possible, without killing any of the bosses or minibosses in the entire game. And since this is a TAS, obviously I attempt to do this as fast possible. The category is very unique from anything else out there, as far as how the route goes, what strategies are used, and most importantly, what glitches are utilized.
There's three main big glitches that happen in the run. The Varia Suit gets deactivated with an Item Refill Glitch, Kraid is skipped to get Speed Booster without killing him, and early Power Bombs are gotten. Beyond this, due to the way the route shaped up to be, a lot of the areas are gone through using unique equipment, and since there's very little you actually need missiles and supers for, there's tons and tons of opportunities to do nice looking and nice sounding play-around stuff.
So, bottom line, entertainment value. Hope you enjoy the run.