The more I work with my freshly calibrated screens/monitors the more content I get - I should have done this long ago. When working with subtle details it is so nice to get prints looking like the pictures on the screen. For example this picture here:
Minolta Dimage A2, September 2004
Above it is in a small version in color. It is a strange motif - at first glance it can be hard to say what it is (or why?!). I wanted to show it in black and white instead, so I converted it. The purpose of this was to give an impression of a picture shoot like 20 or 30 years ago. It seemed a little boring or dull, became better when I adjusted the curves/levels and finally after turning it into a Duotone and sharpening it to get the combo of sharpness and grain it was another thing. The subtle differences from B&W to Duotone and trying different tones would have been hard to do without having the monitor calibrated. Now I could do it without to much of a guesswork; the first print was spot on. I'm not always that lucky, it still happens that I have to print a picture twice to get it right but it's much better now.
Here are links to the pictures for the interested (warning: 2 meg each), first
() and then (). I have no idea about how the B&W version look at your place unless you have calibrated your screen...