re: Best under publicized tradition at your school?

Not a sports tradition, but I don't think people really get how cool Senior Walk is. Every person who ever graduates gets their name carved in the sidewalk. Gets cooler once you've had multiple generations go through.

Sports wise, when singing the alma mater everyone points to Old Main during the last line. Even at away games, so you have to figure out the general direction of the stadium from your seat ahead of time.