WOW! I love sign language, I took it in high school as one of my languages, and one of our assignments was to pick songs and sign them in front of the class, I picked Kiss by Prince and Divinils, I touch myself!
I am always in awe of communication, and the deeper meaning of everything. Even in the hearing world, we are not really listening to each other, we are mostly in our own heads.
I have never forgotten the American Sign Language alphabet, and my kids know it too. I have been to some deaf clubs, and it is amazing, and we were all in awe of the deaf champion on Dancing With The Stars.