Rose Tyler: Can't you come through properly? The Doctor: Then the whole thing would fracture. The two universes would collapse. Rose Tyler: So?

I saw the Fall of Troy! World War Five! I was pushing boxes at the Boston Tea Party! Now I'm gonna die in a dungeon.... [disgustedly] in Cardiff!

Rose:i love you Doctor:Quite right, and i guess if it's my last chance to say it... Rose Tyler... (the doctor fades, him in his TARDIS, with tear tracks and a tear running down his cheek)

In the end I sort of though we created a companion who was so alive and dynamic and so wedded to the doctor that you’d need a whole universe to contain her in. The only way to get rid of her is to send her into a parallel world from which she can never return; otherwise she would stay with the doctor forever.

Captain Jack: Rose, you are worth fighting for. [Jack kisses Rose passionately] Captain Jack: Wish I'd never met you, Doctor, I was much better off as a coward. [Jack kisses the Doctor the same way]

I would rather be confused for 10 minutes than bored for 5 seconds.

My God, that scene in Monster Inc. where the monsters realise that their entire world is founded on hurting children -look at that for a change! Two galumphing cartoon characters making a shattering realisation about their world and their role in sustaining it. A truly epic moment. It's stunning.