2007 Final Project: Yamada's Ippatsugei Lesson [一発芸]

Bonus points for use of the university film studio, but I think an explanation of what ippatsugei might be useful here. What do the viewers think?

As I understand it, Ippatsugei is a short gag involving a catch phrase and/or body action. Every year one such gag seems to catch the public imagination and it is done to death by the "one trick pony" comedian who has coined it, until the next one comes along.