The radio show is actually far superior to the tv show. You should really get the first two series on CD (regular audio CD). But stay away from the MP3 CD, also sold by BBC. The audio quality is awful on that one.
Still, the tv-show has its moments, even though it had a really low production budget. I find the computer animation segments from the "book" particularly interesting and entertaining. Everyone wanted to know what kind of computer they were made on. The answer is that they weren't made on a computer at all. They were all hand drawn...
