I used to pronounce it Shah-m'n, but heard the name of that one-hit wonder band pronounced 'Shay-mun' so that's what I go with now... but I don't really care that much.
You say tomayto, I say tomah-to. You say potayto, I say topapo.

- Le Messor
"Thanks, you don't look so hot yourself."
~ After being told he looked cool.~ Yogi Berra (attrib)