As everyone should know - today in 1963 the BBC broadcast that fantastic and otherworldly theme music for the first time. Setting the T.A.R.D.I.S on a journey that is still captivating people today.
At the close of the episode his time machine left present day Earth far behind and began it's 49 year journey, a long and winding journey that introduced the us to Daleks, Sea-Devils, Cybermen, Sontarans, Ice Warriors, and Time Lords.
Sending thousand's of children scuttling behind the sofa, peeking out at the mechanical voices screaming EXTERMINATE and finally cementing in the viewers consciousness that the idea of bow ties really being quite cool . . . . .