There comes a time when the PCs have the villain cornered and helpless. When there is no escape. When the time is right for the bad guy to meet his ultimate fate. The PCs have laboured and sweated and fought their way to this point. This time, they deserve to win. The villain has always escaped before, but not this time. And he knows he's defeated.

Do not have the villain beg for mercy.

Transcript

Nute Gunray: You can't win, Anakin. If you stlike me down, I shall become more powerful than you can possibry imagine.
Anakin: I don't care how much you know. You have no hold over me.
Nute Gunray: Oh rearry? What about your pletty wife, then? Senator Amidara?
Anakin: What do you mean?
Nute Gunray: She dies. You have foreseen it. Do you want her blood on your hands?
Anakin: I will not let Padmé die!
Nute Gunray: My death here will seal her fate.
Anakin: You will have no say in the matter!
Nute Gunray: Exactry.
Nute Gunray: The people of Naboo loved her, and rook how she repaid them.
Nute Gunray: Worthress Senator of Slag.
{beat, Anakin fuming}
[SFX]: Whooom!
[SFX]: Slice! {Anakin slices Nute with his sword}
R2-D2: So Nute, any more cutting remarks?
Padmé: Actually, you can do some pretty cool things with slag.