29. "Dalek" - In Utah in 2012, The Doctor discovers a museum of odd, alien artifacts. Who accidentally regenerates a Dalek, unleashing it on the people in the facility?
From Quiz "Doctor Who" - Series 1
Answer:
Rose Tyler
The Doctor, upon arriving in this facility (run by a collector of alien artifacts, Henry van Statten), is taken captive and forced to come face to face with one of his mortal enemies, a Dalek, the last of its kind. While The Doctor is taken off to be examined (and tortured), Rose is let in to the Dalek and she unknowingly touches it, regenerating its powers and allowing it to escape its chains, going on a rampage through the museum. Fortunately, Rose also imbued the alien soldier with the power to feel, causing it to destroy itself before it could escape the compound. Upon leaving, The Doctor allowed techie Adam Mitchell to join them in the TARDIS. After all, he was kind of out of a job...