Ok, so this dates the movie, however I always loved the part where he gives the bear to the girl who can't afford it. Now, in my jaded 30's I pick apart the situation-stranger offering expensive gift to child-not to be trusted. However Penny paying for it made the potential stealing situation void.
Films' portrayal of strangers' kindness to children would indeed make for an interesting term paper. I thought it was a very sweet scene, as was the one in "Frankenstein"/"Young Frankenstein." It's sad when people see something like that and assume the worst, but that's the cynical era we live in.