What's a duvet?


>I bet you thought this was to start an argument!
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>No, as part of my on-going interest in finding out stuff about you strange people across the Atlantic, I was just wondering the following:
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>Every time I see someone in bed, in an American film or TV show, he/she/they always seem to have the pillows stacked up high, at a ridiculaously steep angle, such that they seem to be sleeping with their heads up against a cliff.
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>I imagibne this would give one a terrible crick in the neck. Personally, I prefer my pillows such that my neck is at right-angles to my shoulders. Is this an American thing or just on shows? If the latter, why do they do it? I find it bizarre.
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>Still on the subject of bed-linen, do you guys still use sheets, blankets, and bedspreads, rather than just a duvet? What a pallaver! That Charlene Whats-her-name, who used to be "the Poison Dwarf" in "Dallas", was on a UK reality TV show where she marvelled at sleeping under a duvet for the first time.
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>Curious of England