The introduction, while it's also a Tear Jerker for those who saw Godzilla vs. Destoroyah, is very well done and not afraid to retell it point for point.
Godzilla's battle with Anguirus.
Godzilla and Anguirus going tag-team on Varan.
The three-on-one battle between Godzilla, Anguirus and Varan against Dagarla. Even though Dagarla is killed due to his resistance to Godzilla's hypnosis power.
During the fight with Baragon, Anguirus manages to pin him down, allowing Godzilla to hypnotize him.