The decap move in Barbarian, didn't like Barbarian II much.
Pretty much all of the sword slices in Moonstone.
The double kick in IK, if you could pull it off.
The powerup where the opposing team were all knocked over in Speedball II.
Taking weaker bots out with the triple lazer robot in Paradroid 90.
The roundhouse kick in Full Contact.
Techno's throw in Body Blows Galactic.