Saw an accident on my way to work - motorcyclist knocked off by a lorry. Really does put things into perspective. There were already people helping out - one person stopped the traffic, three others were tending to the casualty (someone put him in recovery position), someone was on the phone, ambulance just arrived on the scene.
I got a bit upset and hope the guy wasn't too badly hurt, but then I thought that it's good to see that people look out for each other if something goes wrong and should I ever have an accident I wont be dying on the road alone.