I always assumed that this was some Christmas standard, and Mariah Carey's version was so good that's all they played of it. I had no idea that she was the first one to sing it. Hmm..
http://en.wikipedia.org/wiki/All_I_Want_for_Christmas_Is_You_%28Mariah_Carey_song%29
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"What's wrong with bootblacking? We like it very much!"
This is Yesmar.