“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. A fifth dimension beyond that which is known to man ... a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. A wondrous land whose boundaries are that of imagination. There’s a signpost up head…you’ve just crossed over into…….."

I remember watching these.....when the TZ was broadcast for the first time.....:)