I did a good deed once (I've only had my HMMWV for a year and in FL there aren't a lot of stuck people) and it didn't turn out so well - but the story is kinda funny...
So about a week after I got my MV I went cruising with my brother and sister in law and their two kids late one afternoon, just before dark. We never hit any major roads, just cruised the neighborhood. Several blocks from my house I came across the unusual sight of a relatively new full size Dodge with it's front right wheel in a ditch and the three other tires essentially off the ground.
There were a couple of people standing around looking at the truck and we pulled over to see how we could help. In our excitement my brother-in-law and I failed to fully take stock of the situation, which comes into play shortly. I whipped out the winch controller and let out the cable, hooking it to the Dodge's hitch. I set the throttle lock a little higher and put on the parking brake
(please feel free to tell me all the things I did wrong, seriously) and began winching the truck back out of the ditch and onto 4 wheels.
As the truck settled back onto the road we started looking around and realized that this little incident was not a one-car deal (although no one ever said anything to us as we were helping the guy out of the ditch). The driver had evidently lightly tagged another car before going into the ditch - the damage wasn't visible in the dusk lighting. The driver himself was barefoot and upon closer inspection may have been drinking. About this time he thanks us kindly and hops into his vehicle to "run back to his house up the street and get his license." At this point my brother in law and I are looking at each other and thinking, oh crap...
The poor folks in the other car are looking at this guy with WTF expression and then at us with a sort of lost look. The community officer (we have these police-lite guys in our city) comes up as thing guy is going down the road and we eased on out of there after talking with them for just a few minutes as it was getting sort of late for the kids...
I dropped the family off at the house and went straight back up there to see what else I could do to help make sure that everything was ok and that the people he hit didn't get left out in the cold. I was only gone for a couple of minutes and when I got back everyone had left! I called the police dispatcher and told them what happened and gave them my contact info but never heard anything else!
To this day though I have the distinct impression that I helped a drunk guy get back on the road and avoid a ticket. I hope that isn't what went down, but I'll be sure to fully understand the situation next time!
That said - I'll never stop helping those who need it, as long as it won't put others in danger after I help them!