So, bad news: I got most of my personal files out of my HDD, but the Dwarf Fortress (and M&B) save is corrupted and can't be recovered. Deathkey died to the logic of its world exploding in a paroxysm of confusion.
SO HERE'S WHAT I'M GOING TO DO: Once I'm back up and ready to run (at least my system is stable!) I'm going to start a new fort. I'll be taking recommendations for fortress ideas, but since I want to start ASAP I'm going to throw 'arctic' and 'terrifying biome' into the hat, and add on as people send in ideas.
I'd like to say I'm going to be streaming tonight, but apart from real life stuff I still have to load up a ton of programs onto my computer and re-do my recording setup. COME HELL OR HIGH WATER, you'll see me on Wednesday for M&B, even if it's just a picture of me boring holes through a wall with a thousand-yard stare. Thursday I'll do a special 'Get a New World's Shit In Gear' stream, then I'll be gone over the weekend to go visiting family for Christmas.
Again, I am really sorry I lost the save file. I'm going to be looking into an additional cloud-based backup solution so this sort of crap doesn't happen again. The good news, at least, is that I'm taking this opportunity to tweak my hardware and software while working from the blackened ground up, so I can deliver the best stream quality I can.