Another way to achieve this look is to start with a well-saturated image, make it somewhat dark, and then use an adjustment brush, or a series of brushes, to lighten up the areas of interest. If you look at these shots, you can see the pattern of the environment being dark, but the subject (little red riding hood and her lantern) being lighter than the surrounding, scene areas. Light advances, dark recedes is the simplified way of thinking about this: a light object seems to come to the forefront when it is found within a darker scene or setting. This is one of the reasons, as Tim mentioned, that applying a vignette can be so effective. After the most important subject, like say red riding hood, has been lightened up a bit, it's also possible to "paint on" selected adjustments that will further enhance the lightened areas, such as selective sharpening, or added clarity, or added saturation, or along the same lines, it's possible to paint on softening to areas that you want to sort of become less sharp, less crisp, less noticeable. In this type of fantasy Red Riding Hood in the woods type of a set-up shot, the natural feel is somewhat DARK to begin with...we can easily accept that it's dark in the woods...and she has a lantern, and has fair skin...we can easily accept a fairly tale type processing look, even if it's a bit extreme. In the shots the one fellow did of the brunette woman with the dark brown leather couches and dark carpet, the same thing would apply...make the surroundings darker...make sure the woman is brighter, sharper, clearer.. BOOM! She stands out in her tan dress and white socks, while the entire room and furnishings easily are visually sublimated due to being a lot darker.
If you notice, a lot of the people who do these types of shots this way have very little actual "lighting" visible, and there are sometimes very unnatural, odd, even dumb Photoshop tricks that look really hokey. One of my favorites is the Malaysian fellow who somehow inhabits a world in which young kids frolic in the countryside, and water buffalo graze in the fields, and the kids and the whole world are all brilliantly back-lighted by a Sun that can, and which does, shine from multiple directions at the same time!