Here are my favorites from an afternoon's session of tinkering:
My daughter shot this photo with my camera as the wedding guests were filing out of the church. I like that the happy father of the bride dominates the photo, but enough of the church's interior can be seen to allow a feel for the setting and circumstances. In the original color version, there's a blaringly bright red exit sign next to his head and a couple of other red lights that detract. Switching to black and white erased them.
This one looks nice in color, but switching to black and white puts the focus on the light sparkling through the ice. It brings back fond memories of my youth and the many rolls of film I burned through while I was learning how to compose photos and manage light. It's much simpler and cheaper these days to experiment, thanks to digital technology.