Start from the top to bottom

10. When Korea learn metalbend

9. Steven finds out about Garnet

8. Ben gets the Omnitrix

7. Bismuth gives Steven a pep talk

6. When Scott and Jean got married

5. When Aang learn water earth and firebending

4. Terry learns the truth

3. When Twilight became a alicorn

2. Danny confess his love for Sam

1. Garnet and Pearl reunite with Bismuth