HDR is very useful for shooting interiors. I don't have any lighting set-up, and the dynamic range of a pic like this extends from gloomy corners to the light through the windows. Without HDR I'd be able to get the highlights right, or the shadowed areas... but not both.
For any Quakers out there, this is Swarthmoor Hall, near ulverston, home of George Fox...
LOL, I was going to say was that Swarthmore, with the HDR the rooms looker brighter and better than last time I visited, I like the picture too.