QUOTE(Xi @ Jan 27 2008, 04:21 PM)

I pronounce it 'she'.
In addition to my name, it is the fourteenth letter of the Greek alphabet, and equals eleven. I have heard several other explanations that I don't care to go into right now, but that are out there, floating around.
It is pronounced "zī," "sī," or in modern Greek, "ksē."
Its value is 60 in the Greek numeral system. Oh, you mean that xi is 11 in the Roman numeral system.