I never met him, but I've found it so inspiring to read the accounts by his former students. A few articles and personal accounts below, but there are many more.
A small factual correction to the podcast from Rav Kahn's daughter: "The Rav did not ask my father to teach gemara at Stern. Rabbi Mordechai Willig was the first to teach gemara at Stern after The Rav gave his introductory shiur in 1977. In 1983, my father was asked by Rabbi Saul Berman, head of Judaic Studies at Stern at the time, to teach gemara at Stern."
