Damn, I have a lot but if I have to pick 1, my absolute favorite one is:
Kenshi: Tele-Copter. The only thing that annoys me is that it copies a little from Scorpion's face slice fatality. But I guess you need a starting point if you're going to shred somebody to little tiny bits and pieces of nothingness. That pose at the end is just perfect.
Other favorites:
-Kung Lao: buzzsaw
-Scorpion: face slice
-Subzero: chest-cold
-Kitana: 2 hands slice and fans to the face
-Tremor: summon 2 giant boulders and smash
-Predator: laser cannon
-Ermac: head lift
-Kung Lao: flower pot
-Kenshi: spine lift
-Subzero: bed of ice
-Jax: rib rip and head twister (so badass)
-Johnny: head bash
Favorite Klassic Fatalities remake:
-Kung Lao MK2 slice. They did this one so perfect. Arguably my old time favorite. I was so honored to have this one return and show off in the MKX engine.
-Scorpion klassic toasty. The flame effects look sick, but I wish the skeleton was burning instead of being so clean and white. MK9 did it right.
-Jax MK2 arm rip. Very well done. Also another of my old favorites.
-Mileena MK2 man eater. better than the original.
Might be just me, but does anyone else find it annoying how about 90% of the fatalities in MKX end up with the camera focusing on the gored bodies instead of the winning character doing a cool win pose? I feel like MK9 did the total opposite. When any character was done with their fatalities, they would have the camera show the winning character. Don't get me wrong, I do think it works for some of them like Takeda's rib rip, Scorpion's face slice, Tremor's boulder smash... but sometimes it can get annoying. I love the detail the characters have gotten and I just wanna see that, this isn't a fucking horror game, yeah it's heavily based on killing but it's also about the winning character coming out on top in what this is, a fighting game (tournament). Sorry just had to let it out, I might be alone with this and I don't have a problem with anyone who likes it the way it is now. Just my opinion.