Ok, I am not so much into this now, but I was when I was younger. Great fun. Someone mentioned the price being too high- well I just checked on an online dvd store, and the boxset for all 32 episodes is going for the price of £99.99!! So, iTunes price really is, for once, a bargain!
So, if you are into this kind of thing, Thunderbirds was a great show all about a team of rescuers in some very tense situations, and is well worth getting.