Not a movie, but SEINFELD referenced THE GODFATHER several times.
Two references off the top of my head are George, "when I try to get out, they pull me back in", and Jerry, "My house, where I sleep, where I come to play with my toys".
"Any American who is prepared to run for president should automatically, by definition, be disqualified from ever doing so"-Gore Vidal "Conformity is the jailer of freedom and enemy of growth"-John Fitzgerald Kennedy "The reason the mainstream is thought of as a stream is because of its shallowness"-George Carlin