The control you have over the Nik software settings is astounding. You can easily add control points to alter small sections / tones of an image. You have mirco adjustment control over exposure / contrast / blacks / whites and other standard settings you'd see in Adobe Photoshop Raw. But then you also have a series of presets down the left hand side that make editing a very quick and easy process to achieve stunning photographic results.
As these three shots were of elderly men, i wanted a very raw and contrasty finish that really amplified the textures and wrinkles in the faces. Below is an example of the Nik Software HDR Efex Pro interface.