During the final launch of the space shuttle Discovery a passenger on a passing commercial airliner recorded video of what the launch looked like from the air. Even after watching the launch live in spectacularly high definition video from NASA, this is somehow even more amazing.
Probably the best part is the pilot’s announcement near the beginning:
Folks, the space shuttle’s going off the right side of the aircraft right now. Those of you on the right side of the aircraft can see the space shuttle. Those of you on the left side of the aircraft can probably see the people on the right side of the aircraft looking at the space shuttle.