Michael Thaddeus
Michael Thaddeus is a tenured professor in the Mathematics department. He has taught Modern Algebra II, Linear Algebra, Topology, and Honors Math. He may have taught Music Hum at some point too.
He is known for having a graph taped to his office door showing the growing administrative bloat of Columbia over the years, for wearing salmon colored pants, and refreshing himself during lecture from an Absolut Vodka bottle that is presumably filled with water.