What are some (good/positive/impressive) things about you that people you knew years ago cannot forget?

I have no idea, you need to ask them.

I would hope it would be kindness and humor. I believe it would be my intellect. 

One former classmate, at a high school reunion, told me that he was impressed with me all through junior high and high school. To him, I was an "enigma" (his word); he couldn't "figure me out" because, unlike everyone else in school, he saw me as not fitting into any certain peg. I was in a wide variety of activities. And he saw me getting along with everyone, while everyone else chose to hang around with, and get along with, only certain groups of peers.

I treasure his words to me.
:)

Years ago I had a friend who came in from California to see me---He said I was the only person he knew who still used his brain after graduating from college.

And believe it or not, I am known for my humor.

I've also been told over the years  by various individuals that I am the smartest person they know.

Hey, you asked....

Years ago I was quite good vocally and as a pianist.  My voice is completely gone now.  I have a piano but, honestly, I never play anymore.