Here's what I wore to work today (and more or less everyday). I personally love black suits with a light colored (or white base) shirt and tie combo. I've pretty much got the salaryman look down, but I choose my shirts very carefully -- must be double button collar, and sharp cuffs which in Japan comes beautifully in the form of Brick House brand y-shirts. A matching, yet contrasting tie is extremely important... Choose your colors wisely, gentlemen.
For the record, I've had this particular suit for years (and recently hemmed due to me being much fatter when I first bought the suit) so the center pleat is not really well defined anymore and the crotch is a little too roomy. I really want to pick up a few new suits, but I would need some money for that first! :(
Please excuse the goofy smile in the first picture... :P