Simon Maxwell our Lightroom Tutorial contributor in London just finished two excellent tutorials about using the Highlight/Shadow sliders in Lightroom. To cover the subject Simon did two different tutorials:
I believe that the Highlight/Shadow sliders are a hugely important feature for real estate photography. This feature is not unique to Lightroom, it's an Adobe Camera RAW (ACR) feature so it's in Photoshop and Photoshop Elements too.
The reason it's so important for real estate is that it gives you a powerful tool to reduce window brightness and increase the brightness of shadowy areas of a room independently. Simon's tutorial illustrates this nicely. With these two sliders in Lightroom (or ACR) and an off-camera manual flash or two you can deal with most of the real estate interior shots you'll encounter. This means you don't need to take the time to shoot brackets and process the brackets with Photomatix or LR/Enfuse. These sliders along with a little flash are going to make HDR and Exposure Fusion processing for real estate photos obsolete!