During our last visit to DHS, my daughter and I were walking up to the standby line at the Rockin Rollercoaster. We stopped to look at the wait time clock, and then a man ran up to me and jammed two Fastpasses for the ride into my hand, and without saying a word, ran into the fastpass entrance himself and disappeared. Now, this was at the end of an EMH night, so the regular line wasn't too bad, but I still wish that I could have caught up to he man to thank him.
The next night, at Epcot, we held 3 FP's for Test Track. It was also an EMH night, and it was going to be our last big ride on the way out. My wife was exhausted after a long day of walking and decided not to ride, so my daughter and I made the decision to just use the single-rider entrance and ride separately. We gave our FP's to a group of 3 who were looking perplexedly at the wait time, and the genuine thanks we received was all the reward I needed. We got right on (no wait at all for the singles) and the folks who we gave our fastpasses to were right behind us.