Hot Spot versus the forces of Cobra, stopping them from getting any Cybertronian tech.
The recently-reborn Megatron's curb-stomping of Bludgeon.
Megatron lands on Earth after his shuttlecraft was devoured around him, then walks unharmed to where the other Transformers were making their last stand, completely ignoring the metal-eating Swarm. Of course, he's been reinforced with Rheanimum, a chemical that allows him the luxury of ignoring the Swarm, but still...