This is the first time I've made a gif of the 1965 Twilight Zone opening that I was truly satisfied with. No sound, of course, because it's a gif, but I think you know the drill!
“You unlock this door with the key of imagination. Beyond it is another dimension: a dimension of sound, a dimension of sight, a dimension of mind. You’re moving into a land of both shadow and substance, of things and ideas. You’ve just crossed over into… the Twilight Zone.”