I just saw this video over the weekend (Thanks Lucky!). As a promotion for the launch of the A350, Airbus put together an "airshow" of sorts with five A350s flying in formation. Keep in mind these aren't fighter jets (i.e. Blue Angels) but massive, wide-body commercial airliners.
I definitely prefer Boeing (if it ain't Boeing, I ain't going) but will make an exception for the A350. The A380 is pretty sweet as well. Anyway...this video is just awesome.
I would love to see something like this in person although the video captures the background of how they put it together which is pretty neat.