This is just a little hero worship on my part; a colleague and I just got off the phone from BobCringely in CA, USA. Talked about various things: his TV shows, the changes in the industry since then, his predictions for the future, etc. All had to be done though:-)
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"