For me the idea of these extreme activities seems to typify eccentric Britishness. I just love the pointlessness of it. I heard about extreme ironing several years ago; now I discover it has its own website http://www.extremeironing.com where the curious among you can find lots of (I think) amusing pictures and links. Here are a couple of examples
But, extreme knitting is new to me and I want to share the youtube video of the 1000 yarn knitter
I also like the picture of the supposed longest knitting needles
If anybody comes across new extreme activities I would be very interested. Please tell me.