Do you like B&W pictures?  The B&W space is highly complex.  Sometimes you can convert your digital pictures to B&W in the camera, but this really limits your options.  You can also just desaturate the colors but this typically leaves an unsatisfying result.  I used a Photoshop plug in called Silver Efex Pro or Color Efex 3.0 from Nik Software to create the images below.  For each image I provide sort of my standard conversion and then an alternative to give you an idea of the diversity of things you can do in the B&W space.  

I personally like B&W pictures because I feel it allows the viewer to look at the image with the clutter of color.