Missy,
Yes, I have experienced kindness from locals.
One example that readily comes to mind is a visit to Civita di Bagnoregio a few years ago. I used the local Bus to get to Bagnoregio and then the small shuttle for the trip to the bridge at Civita (following the advice in Rick's book, of course).
At the end of my visit I walked back across the bridge to await the shuttle for the return to Bagnoregio and Orvieto. For some reason, the Shuttle Driver decided to take a longer-than-normal siesta that afternoon and as it turned out the weather changed and I found myself in the middle of a torrential downpour! The few businesses on that side of the bridge were also closed at the time, so I had nowhere to seek shelter.
Although I had an Umbrella and Coat, myself and my Daypack were progressively getting thoroughly "soaked". After huddling in the cold for what seemed like an interminable span, I noticed a car pull into the small parking lot. The couple in the car got out and began walking towards the bridge, but returned after about 5-minutes or so. I asked them if they were intending to visit Civita, but they indicated it was too wet so they would return another day.
They asked why I was waiting there, and after explaining the "missing" shuttle, they offered me a ride back to Orvieto. I don't normally "hitchhike", but under the circumstances I felt it was a reasonable risk. Perhaps my sodden appearance helped? They dropped me right at the train station in Orvieto, and from there it was just a short ride on the Funicular back to my Hotel to dry out.
It turned out that the kindly couple was from Milano, and they had a "summer home" in the area. I'd have to check my trip journal, but I believe I offered a "donation" for fuel (can't recall if they accepted)?
Give my miserable state at the time, I very much appreciated their kind gesture. Hopefully I'll have an opportunity to do the same for others at some point.
Cheers!