I have much of pictures from in-flight KLM-heavy's. I'm not really a spotter, but still I like it to show you my pictures.
Pictures only taken from the cockpit.
Boeing 747-400
United B777 +/- 2000ft below us, bound for London
Rocky Mountains, from cockpit A330, approaching Vancouver
In flight Canada
Tonight, I would like to show you more pics. (O.a. B777)