Fritz the Cat (film) (Cinemation, 1972)
Based on the comic strip of the same name by Robert Crumb, Fritz the Cat was an American adult animated comedy film about an anthropomorphic feline (voiced by Skip Hinnant) living in the mid-1960s in New York City. Fritz the Cat is a satire focusing on American college life of the 1960s, race relations, the free love movement and left- and right-wing politics. (This focus on politics would cause comic creator Crumb to have numerous disagreements with filmmakers.) Fritz the Cat was the first animated film to receive an X rating in the U.S. It was also one of the most successful independent animated features of all time, grossing an astounding $90 million(+) worldwide. A sequel, The Nine Lives of Fritz the Cat was produced without the involvement of Crumb or Ralph Bakshi (the director).