I thought it was good as these things go, nice to actually hear Ralf & Wolfgang talking.
Mostly it was well-informed and not the usual stupid stuff, well worth a listen-again on the BBC website for those who missed it.
Even though they are my favourite band, I do think the idea of them being responsible for all of techno, electronic pop etc is a bit silly. They were perhaps the first to make amazing pop with all electronic backing but I think the truth is that the equipment was coming into being and if they hadn't used it then someone else would've. If you've got some Moogs, some step sequencers, and a pop (as opposed to wildly avant garde/atonal) sensibility then it's hard to make stuff that doesn't sound a bit like Kraftwerk (of course very hard to be anywhere near as good as them though).