Here’s an image that exploits much of the Nik Collection of plug-ins. I started with a 5-shot bracketed exposure sequence that I processed in HDR Efex Pro 2. Then, I brought the image into Photoshop CS6 and applied local color & contrast tweaks using Viveza 2. Next, I ran the image through Color Efex Pro 4 to adjust global contrast and slightly modify the textures. I really like using the Nik plug-ins together as the effects really complement each other!