Hey Andy, thanks for the update.
I used to like to stand by your dad's desk during class and watch him go. It was amazing to see those huge hands of his create work of such absolute precision and delicacy, especially with a brush. It's one thing to admire his finished, printed work but quite another to observe him actually putting it to paper -- which I'm sure you and Adam know all about.
My favorite classroom moment with Joe was a day when I was having the worst time learning to do ink wash. I just couldn't get it. Joe tossed a piece of tracing paper over my crummy drawing and went to work. In about three seconds, I got it, or at least understood it (mastering it, of course, was something else entirely). The cool thing was that Joe managed to improve my lousy face drawing and yet somehow retained my style, rather than obliterating it under the work of the Master. Now THAT is teaching! I still have that overlay, somewhere.
Tell him all us guys wish him well.