What makes it really good though is the fact that up to that point, Cliffjumper still wasn't a hundred percent sure he trusted these Mirror Universe Decepticons. But after witnessing Megatron putting himself in danger for a stranger (not unlike his Optimus Prime) Cliff is finally convinced which side is in the right.
Despite his overprotective nature, Starscream respecting Sephie's wish to be her own hero.
Arise! Galvaron!, also counts as a moment of awesome.