There are too many skyline shots at Sand Hills to go through them, one-by-one. Some are off tees to skyline fairways, some are shots from tees or fairways to greens. In the treeless environment, how can you not have a few?
At Sand Hills, one side of a fairway can have an awesome skyline shot to a green with nothing but green contour and sky looking down at you, and the other side of the FW- not so vague, displaying some back ground for depth perception.
Wild Horses best skyline green is 16. I think the boys didn't get it right out at Bayside in Ogallala on the second or third shot into 15.
As for Whistling Straits #16, it is so-so. But, in the endless horizon theme, #13 at the straits is pretty good, I think, followed by #8.
But, Rees nailed it at Torrey Pines as noted above. I think Proctor and Axeland did a fair one at #11 Bayside as well. However, I think those two are a sub-category of skyline that mimicks the trendy fashion of the horizonless pool concept, with the endless horizon backdropped by water. Great stuff, nonetheless...