Gintama' - episode 8 - 22 May, 2011

Overall episode number: 209 Due to a lack of budget, the Yorozuya try to use old footage to make a filler episodes. While Hasegawa first plays a theme song, the characters then watch a fake trailer a supposed second film based on the series. The episode ends with a chapter of "Teach us Ginpachi-sensei", a story in which Gintoki is the teacher from high school class composed of anime's characters. (Source: Wikipedia)