Reading this article reminded me of a great image I made during a family trip to San Diego a couple years ago. My brother in-law and I had just finished climbing Cowles Mountain to catch the sunrise. When we got to the top there was a girl doing yoga while her boyfriend snapped some pics of her with his iPhone.
After a bit of deliberation I decided to ask if I could make a picture of her. She happily obliged and the resulting photo turned out really well (see above).