It's a cartoon crossover for the ages. A nearly five minute clip of the upcoming "Simpsons"/"Family Guy" combo episode was premiered at Comic-Con and now it's online for all of us to see.

The preview shows the Griffins winding up in the Simpsons' hometown of Springfield where "everyone looks like they have hepatitis." Peter and Homer quickly bond over donuts and Stewie and Bart find their mutual love of prank calling. Even in a five minute clip, the references to each show, and other animated series like "The Cleveland Show" and "Bob's Burgers," fly like crazy.

The crossover episode airs on September 28th, the same night one of "The Simpsons" characters will die, and you can click here to see Simpson/Family Guy Snipet.