I've got loads:
Edward's Titanic impression: Jack! Don't let goooo!
When Edward put the Sainsbury woman's glasses on and says"I look like a nerd!!" but then quickly adds "but if you wear glass, you can still be cool, just own it!"
Edward: John, save me!
John: Don't be such a baby!
Edward laughing hysterically at nothing backstage.
The talking moment in 'Oops I Did It Again'
When John jumped over the keyboard
Edward: Our favourite food is SUSHI!!! Oh yeah and pizza and about 100 other things, but who cares??
The whole what's our favourite colour conversation.
John: We're only living in the X Factor house, we don't actually live here.
John: Today, we're like, chopping onions, and it's so exciting.
Edward:These are uncooked onions. I've never seen them before! Get your onions! ;D
John: Imagine being called Edward.
They are so amazing! I'm sure there are many more.