I'm listening to Dehumanizer right now.
I've been listening to the man's voluminous body of work ever since he died. Whether with Black Sabbath, Rainbow, Dio or even Elf's blues-rock, it is amazing how consistent he was. Some of his albums were better than others, but to my ears he never made a bad album.
I, too, get choked up at times. His musical and lyrical visions have been such a major part of my life that it is difficult for me to say goodbye to him.