Another quote from Blink, during the third season of the current Doctor Who:
Billy: Where am I?
The Doctor: 1969. Not bad as it goes: you’ve got the moon landing to look forward to.
Martha: Oh, the moon landing’s brilliant! We went four times. Back when we had transport.
The Doctor: Working on it.
Billy: How did I get here?
The Doctor: Same way we did: Touch of an Angel. Same one probably, since you ended up in the same year. [Billy tries to get up and leave] No, no, no, no, don’t get up yet. Time travelling without a capsule, nasty. Catch your breath. Don’t go swimming for half an hour.
Billy: [stunned] But I don’t- I can’t-
The Doctor: Fascinating race, the Weeping Angels. The only psychopaths in the universe to kill you nicely. No mess, no fuss, they just zap you into the past and let you live to death. The rest of your life used up and blown away in the blink of an eye. You die in the past and in the present they consume the energy of all the days you might have had; all your stolen moments. They’re creatures of the abstract and live off potential energy.
Billy: What in God’s name are you going on about?!
Martha: Trust me, just nod when he stops for breath.
The Doctor: [gets out a small machine] I tracked you down with this. This is my timey-wimey detector. Goes ding when there’s stuff. Also it can boil an egg at thirty paces. [Makes a face] Whether you want it to or not, actually, so I’ve learned to stay away from hens; it’s not pretty when they blow….