<human>:  When did the TV show ‘Doctor Who’ first air?
<bot>: The first episode aired on November 23, 1963. It was called 'An Unearthly Child' and it was about a strange little boy named 'Doctor Who' who traveled through time and space in a blue police box with his friends, the Doctor, his granddaughter, and her granddad. The Doctor was a time traveler who fought monsters and helped people. The show ran for 11 seasons and was revived in 2005.