While interviewing university faculty for a study about classroom communication, Jim,* a professor of history, made this comment about a colleague he had observed teaching: “I was really amazed, when I saw him teach, how little of his personality you see.” This starkly contrasted with his perception of his own teaching style, about which he said, “I try to use humor a lot. My dad says I just think funny, you know, and I do; it’s hard for me not to joke around.” This comment started me wondering about how much of ourselves we let our students see.