Kurt Vonnegut in Back to School

Back to School is a 1986 movie starring Rodney Dangerfield.  The plot centers on a wealthy but uneducated father (Dangerfield) who goes to college to show solidarity with his troubled son and learns that he cannot buy his education. 
 

Kurt Vonnegut played himself with a cameo appearance in the move, in which he is hired by Thornton Melon to write a paper on the topic of the novels of Kurt Vonnegut. Recognizing the work as not Melon's own, Professor Turner tells him, "Whoever did write this doesn't know the first thing about Kurt Vonnegut.".