"I'm disrupting the learning process, and I love it!"
that gag where homer mixes up his internal thoughts with his talking...
this is the one where bart throws Lisa's prized giant tomato at the principal's butt before she gets to use it in the science fair, and Lisa does a different experiment where she proves that a hamster is smarter than bart, but bart wins first prize by putting a hamster in a toy airplane.
Homer sneaks out of work to go to the duff brewery... there's a weird scene where he reads some poetic RPG-like instructions to go through a path with some giant spider monster.
Homer nearly kills Barney to try and prevent him from driving with how drunk he is.. he gets stopped by the cops and almost passes the test, but then Barney suggests giving him the breathalizer and he gets arrested.
Homer going to a baseball game sober: "I've never realized how boring this game is"
at the end of Homer's 30 day no beer streak, he's about to have one but then looks at all the other depressed drunks in the bar, and decides to leave it and go for a walk instead.