I remember watching The Prisoner when I was very young. I'm sure I didn't grasp 99% of what I was seeing (though I was terrified of Rover) but the show nevertheless made a big impression on me. (In my novels Ashes and Reckoning, I made The Prisoner's catchphrase "Be seeing you" the farewell words used by two of my characters.)
Here's the opening sequence for The Prisoner. You're a free man now, Number 6.