Wanderers in the fourth dimension (An Unearthly Child) It's still a police box! (An Unearthly Child) You can't rewrite history (The Aztecs) One day I shall come back (The Dalek Invasion of Earth) We shall be materialising quite soon (The Rescue) All we have to do is switch the power off (The Rescue) Very well my boy pull the main switch (The Daleks Masterplan) What have you done? (The Celestial Toymaker) Absolutely absurd (The Gunfighters) This is all very simple. This is a computer (The War Machines) This body of mine is wearing a bit thin (The Tenth Planet) So you're my replacements. A dandy and a clown (The Three Doctors) Susan! Surely it's Susan? (The Five Doctors) I am The Doctor. The original you might say (The Five Doctors) So there's five of me now (The Five Doctors)