The Christmas Invasion :
The Doctor : Tea! That's all I needed! Good cup of tea! Super-heated infusion of free-radicals and tannins, just the thing for healing the synapses. Now, first things first. Be honest. How do I look?
Rose: Umm... different.
The Doctor: Good different or bad different?
Rose: Just... different.
The Doctor: Am I... ginger?
Rose: No, you're just sort of... brown.
The Doctor: Aw, I wanted to be ginger! I've never been ginger! And you, Rose Tyler! Fat lot of good you were! You gave up on me! Ooh, that's rude. Is that the sort of man I am now? Am I rude? Rude and not ginger.
The Doctor : People assume that time is a strict progression of cause to effect... but actually, from a non-linear, non-subjective viewpoint, it's more like a big ball of wibbly-wobbly.... timey-wimey.... stuff.
Sally Sparrow : That sentence started good.
The Doctor : This is my Timey-Wimey Detector. Goes "ding" when there's stuff. Also, it can boil an egg at 30 paces. Whether you want it to or not, actually, so I've learnt to stay away from hens - it's not pretty when they blow.
Time Crash :
Tenth Doctor to Fiifth Doctor : Look at you! The hat, the coat, the crickety-cricket stuff, the.... stick of celery, yeah.... brave choice, celery, but fair play to you, not a lot of men can carry off a decorative vegetable.
Tenth Doctor to Fifth Doctor : Oh, no, of course. You mostly went hands-free didn't you? Like, "Hey, I'm the Doctor. I can save the universe using a kettle and some string! And look at me, I'm wearing a vegetable!"