Digital BW, The Print

I will second the recommendation to try Photokit from Pixelgenius

http://www.pixelgenius.com/photokit/

an extremely good set of tools for Photoshop, not just B&W filters, 
and for $50 - you really have very little to lose trying it out.  We 
use the filters on images for engineering proposals and technical 
documents.  It "reset" our way of thinking about acquiring images - 
just take everything in color, then decide on color vs. B&W when 
producing the final product.

Martin VanMeter