If you are old enough, you have experienced the slide show with one slide that always pops up sideways.
Its usually a really good shot too.
Strangely I managed to take the first image to illustrate the point and the iPhone manages to save it sideways – it must be destiny.
Anyway, scroll down and you can see the proper image (sorry about the fuzz and dust its from 1972 after all.
Fred's Slides 