3) Deportivo La Coruna v AC Milan, 2003/04 quarter finals
AC Milan were possibly the best team in the world at the time, and had won the first leg 4-1. It must have been a sure thing? Apparently not, as Deportivo won 4-0 in their back yard and sent a team that included Andrea Pirlo, Alessandro Nesta, and Paolo Maldini among others out of the cup.