My favorite is Celeste's from THH. I think the irony of it is SO good. Celeste tries so hard to inhabit the high-class Victorian image she created for herself, and at first the execution plays along, giving her at least some dignity in death... and then, BOOM, fire truck to the torso. It's so diabolical.
@Galileeo, I also liked Kirumi's. I think that's my favorite from V3.