Hahaha the Doctor's face when he realizes Rose was talking about a cat. <---- what really cracks me up is that he's experimenting with back-combing!<----Also, the cat was ginger. Didn't he want to be ginger?
I've always thought that there was a distinct difference between Nine's fiercely protective/possessive attitude towards Rose and Ten's more distant perspective. People say Ten was more open with his emotions, but only Nine bared his soul to Rose.
The Doctor decided to go back in history when the Japanese language was written. He erased the kanji already made for 'doctor' and made it a man in a box for the giggles it'll get. WE'RE ON TO YOU, DOCTOR!
"The way I see it, every life is a pile of good things and bad things. The good things don’t always soften the bad things, but vice versa, the bad things don’t always spoil the good things and make them unimportant.” The Doctor