Bad Education - Rotten Tomatoes
Alma movie: Ferris Bueller's Day Off (1986)

Stein's famously deadpan style took what could have been an unmemorable role (the character credited only as "Economics Teacher") and turned it into a hilarious look at the crushing boredom of high school, seen through the eyes of students at the mercy of a teacher who sleepwalks his way through roll call -- and a lecture on the Smoot-Hawley Tariff Act.