Here’s my 10 worst for the whole saga (theatrical cuts only):
10: Kijimi’s destruction
9: Order 66
8: Han’s naming scene
7: The dagger reveal
6: Anakin confessing the Tusken slaughter to Padme
5: Jar-Jar stepping on poop
4: The fireplace scene
3: “You are a Palpatine”
2: Anakin murdering younglings
1: 3PO head swap