I've used 35mm black and white film recently for the first time in a few years, there really is a completely different effect achieved than giving your digital images a monochrome treatment.
On the down side it is somewhat more labour intensive and fiddly, so it probably won't become my main medium, but it is good to remember the difference.
Dolerite : the rock that made Tasmania
Scanned negs with no editing.
Tasmanian based, New Zealand born