There's a very famous air display group over here called the Red Arrows, they're made up of nine red BAE Hawks, and they perform at airshows all over the UK (and other countries too I think). I've seen them twice at the Sunderland Airshow, and they're always a treat. I always wonder how much training the pilots have to go through to get those routines dead on.
http://en.wikipedia.org/wiki/Red_Arrows