So many favourite quotes! Here are some off the top of my head:
"From now on I'll no longer be known as Homer J. Simpson. I'll be known as Homer... Jay Simpson!"
"I'm tired of being a wannabe league bowler. I want to be a league bowler!"
"I bent my wookie."
"Bart, no!" // "What did I do?" // "Sorry, force of habit. Lisa, no!"
"It's just a little airborne: it's still good, it's still good."