A couple spring to mind.
Both happened just before Christmas.
After work 1 Friday I noticed a van pulled up out the front with some bloke up to his guts in the engine bay. I went out to have a look and offer a hand. Electrical troubles. We tested the battery, alternator and starter motor. Nada. Unfortunately for me I know more about car mechanics than I'd really like to 'cause many of my cars have shit themselves on me at the most inopportune times & I've been too poor to afford to get anyone else to fix them for me. Anyway I ask him if he's got RAC, yep but no phone so I lend him mine. "Up to 45 min. waiting time" he's quoted.
"Might as well have 1 of these" I say offering him a coldy. And we chat as blokes who are strangers do. 15 min. later the RAC guy turns up - he can't fix it - something to do with the electrics that govern the fuel pump. Remember when you didn't have to be a sparky or an IT engineer in order to fix a car? Another 45 min. wait for the RAC tow truck. Another beer and a good chat. 15 min. later the towie pulls up and I send the bloke off with a roady/traveller since he's headed home with the towie and doesn't have to drive anywhere.
Chrissy Eve he turns up with some chockies for the missus, a 6 pack of nice beer for me (which he helped me make a dent in) and an offer of a round of golf with him and his workmates (who apparently insisted when he told them about what I'd done).

The following Sunday. We stop at the servo to put autogas in the missus car. It's stinking hot. I pay and get into the car, key in the ignition and the dreaded "Tik, tik, tik, tik, tik, tik, tik," sound of the starter motor not getting enough juice off a dead battery. Bugger. There is an auto-parts store up the road a bit. We do have RAC but I'm guessing it's a long hot wait. It needs a new battery anyway as my missus has a job interview early the next morning.
Off we trudge. The bloke tells me they're $106 down from $130. I've only got $90 odd, I ask him if I can bring the balance in tomorrow - no dice. I get all the change we have - $98.20. I go back and ask (almost beg) again. "Go on" says his missus, "we'll take it out of the cash tin." I thank them profusely and do the long, slow hot and heavy slog back to the car. In 10 min. I've got the old one out, new one in and we're on the road. Thank you to the several people who offered tools, help etc. but like I said I am unwillingly fairly intimate with many aspects of mechanical repairs on cars due to them being major pains in the fucking arse.
The following day I went to the bank, returned to the auto-store with $7.80 and a big fuck-off box of Cadbury Favourites. I got a hug , a kiss, a handshake and many thank-yous from them just cause I did the right thing.

The human race may just survive.
(Misery McUglywife an attention seeking sociopathic fuckstain., Fri 10 Feb 2012, 7:42, Reply)