Start a new game, use the cheat code "Red5" to get a lightsaber.
Equip lightsaber and stand with your face to a wall (in lightsaber reach).
Open console, type "kill", do not apply it.
Ingame, do the alternative attack for the long swing
During that swing, open the console, apply the "kill" command
Result is that you're hitting the wall with that distinct "spark" coming off of the wall continuously while you're either in the process of dying or dead on the ground. This happens without the kill command as well.
To replicate:
Result is that you're hitting the wall with that distinct "spark" coming off of the wall continuously while you're either in the process of dying or dead on the ground. This happens without the kill command as well.