Seamonkey.

Ellen Page's character, which is Juno, kicks ass. really.
And I love the ending. two of them just singing :)

and the one line to remember from Juno is: In my opinion, the best thing you can do is find a person who loves you for exactly what you are. Good mood, bad mood, ugly, pretty, handsome, what have you, the right person will still think the sun shines out your ass. That's the kind of person that's worth sticking with.

And that's why I keep believing :)