Bill taught my dad in the 70s, and I had him for a semester. As others have said, great communicator. I recently had the chance to run in to him, while I was at work. Despite my protestations of being a bad student, some 10 years down the track he remembered me and reminded me of the basics he'd taught me that applied to my job - again, he was right!
One of the most helpful and approachable teachers. There a reason Churchie kept him for 35+ yrs.
Genuinely nice guy, very smart aswell. Knows how to handle a class of seniors too.