Digital BW, The Print

I've started using the Adobe Camera Raw plugin to do my bw conversions. It basically has the hue/saturation method built in to its interface, plus some levels control. 

So what I do -

I bring the saturation to zero. Then I play with the white balance control until I like the general range of tones. Then I move the shadow slider until the black point is where I want it, then I move the highlight slider until the white point is where I want it, then I hit ok and I'm pretty much done.

When I shoot jpg I just use the channel mixer, which does a good job imho.