For me:

- Till There Was You
- I Saw Her Standing There
- ... third one sooo hard to choose, there's so many good ones xD It'd have to be between Strawberry Fields, Ob-la-di Ob-la-da, Two of Us, A Taste of Honey, Hey Jude... yeah I can't decide! :</>D

What's yours?

I'm so excited because next week's American Idol is Beatles songs ^__^