Here’s a good one I found on Focal Press’s YouTube space. It’s a video showing a technique from Adobe Photoshop Elements 6 Maximum Performance by Mark Galer. He shows how to use a Hue/Saturation layer to target just the sunburned color on a man’s face: he uses the eyedropper to select the color he wants to change, then cranks the saturation all the way up to see all the colors the eyedropper has picked up. Then he shows some tweaks on how to get rid of some of those tones to hone in on the specific color he wants to change.
I believe this one will work in Photoshop as well.
Check out FocalOnline on YouTube for more videos from its excellent line of photography books (Light: Science and Magic, etc.).