Though I've been a window seat hogger since my childhood, it's mostly served as a support to sleep on the flight, a legacy from the pre neck pillow days.
However this one flight, luck was favourable and while cursing my inability to sleep, spotted a double rainbow. Though it's not quite clear from the pic, it was two complete circles of dazzling colours and our flight was cutting right through it.
It has to be one of the best view we've seen from an airplane window. What's yours?