Episode 7F06
Written by Jay Kogen and Wallace Wolodarsky
Directed by Wesley Meyer Archer
Also starring: Pamela Hayden, Maggie Roswell

Premise: Springfield's Speedway plays host to daredevil Captain Lance Murdoch and Truck-o-Saurus, America's biggest monster truck. It's setting the local kids a very bad example. Especially Bart.

Features: Milhouse, Lewis, Richard, Nelson, Barney, Principal Skinner, Mr Largo, Ned Flanders, Tod, Otto.

Couch: The Simpsons rush in - but Homer's weight proves too much for the sofa.

And introducing: Dr Hibbert.

Notes: This is the episode with the sequence everyone remembers, as Homer falls down the gorge. He's getting much stupider by this point.