Couple of years ago I mis-fuelled my car, which conked out 100 yards from the petrol station in the middle of a busy junction. In the hour or so that I sat there waiting for the AA about six different people stopped to offer help, one young lad even misunderstood my explanation, went away and came back with a can of petrol! A bunch of pissheads came out of a pub and offered to push me but I declined that offer.
More recently I came of out B&Q one wet winter evening to see an African bloke struggling along the pavement with an ironing board and several bags of bulky goods. Stopped and gave him and his goods a lift back to his flat. He was going to walk the mile there in the rain with all his shopping!
Some years ago my wife and I spotted a roadie walking along very long road with a dead bike. Stopped and he grudgingly admitted that he'd punctured and had no spare tube. So we threw the bike in the back of the car and gave him a lift home. As we reached his place his wife came out looking grim, arms folded and asked loudly in exasperated tones: "Alright, so what's he done this time?" Poor bloke.