The Yellowstone classic
There's only so much you can do with the view of Lower Falls - limited options of how you can photograph it! But at least you can use some pretty trees for framing and bracketed 2-stop exposures / Photomatix for even tones... still not very original, but hey, what can you do?
(My 17-50mm lens was refusing to zoom out wider than 30mm at this point in the trip, too, further limiting my options. Yay tech problems!)