You flatter me Mark

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My decription of the MS technique is rather over simplified but you get the idea! I've never had a chance for a good play with one as yet. Couldn't justify the £1000+ price tag on something that would rarely come out of the box!
Actually I should qualify that when I said MS mics are what you get when you buy a 'stereo' mic this refers to industry spec ONLY. No domestic stereo mic would use this system.
I seem to recall someone telling me that the BBC did try and record Eastenders in stereo for a short period, dialogue and all. They allegedly stopped because it became nightmarish to swing the boom on dialogue as all the background and middle perspective changed radically with every move of the pole!
The stereo mics on the front of some of the higher end camcorders (FX1 etc) aren't bad actually.