Post processed? Oh no. I don't understand that stuff. This is how my Ricoh CX 2 shoots things naturally when it's set to old-fashioned b/w mode.
All the ones below are straight out of the camera
http://davidhewson.com/photos/index.php?album=venice1
http://davidhewson.com/photos/index.php?album=Feb+9
http://davidhewson.com/photos/index.php?album=venice-jan-2010