I was only 6 when this first aired in 1970, but I never missed an episode and had all the memrobellia that went with it, as a show I thought it was superb and groundbreaking, it wasnt just about 'flying saucers' but actual stealing of body parts, so for a kids show it was quite advanced, the cast was great, it was beautifully shot, music spot on, it sort of lost it's way for what ever reason toward the middle of series 2, perhaps running out of ideas, but Anderson jumped from puppet to real actors with ease. Great show..