Matt,
In Texas, we have a lot of what we call washboard fw, probably left over from furrow of onion farming or the like. They are not considered an architectural feature.
What Tom D describes sounds more like what I would call a spline, as in a previous thread.
At the Tribute near DFW, Tripp Davis built the 10th fw with mounds and ridges everywhere. Not a level lie to be found unless you lay way back on this short par 4. I always thought that was a neat feature along the lines of what you describe. I think it might be better even yet in the second landing zone of a par 5, forcing long hitters to lay up for a third shot past their accuracy range, or take chances on getting a level lie closer.