Pretty much everything by Reading Rainbow - or as they were later known when they added one more member, Bleeding Rainbow.
It was a shame they were so short-lived. I missed the chance to see them when they came to the big city near me, but I did get a chance to tell them on Facebook that I was a fan and I liked their sound.
YouTube doesn't have everything by them, so you have to kind of hunt around to listen to all of their songs.
Anyway. Their songs that I would say touch my heart most are:
Reading Rainbow - Let's Dream Tonight