"Uh, uh, yes, I am. Thank you for asking. Now Abradolf, as you no doubt recall, you were done a favor by our, uh… how shall I say… mafia
crime syndicate."

"I'm afraid I must insist. You see, my wife, she has been most vocal on the subject of the pretzel monies. "Where's the money?" "When are you going to get the money?" "Why aren't you getting the money now?" And so on. So please, the money"

I think we should just pray that Springfield Elementary never takes a field trip to the Ajax Steel Mill.

Nelson: (reading note) "Guess who likes you."

Kent: Kent Brockman at the Action News desk. A massive tanker has run aground on the central coastline, spilling millions of gallons of oil on Baby Seal Beach.

If it tastes of crud, then you're drinking Fudd.
If It's Dog my dear you've got Red Tick Beer!

Shame on Homer! Give Moleman his dignity! He just went there to watch "Too Many Grandmas" in peace.

I love how Ned's Cider Mill Season Pass has the code 00001 printed on it, implying that he was the first (and most likely only) person to sign up for one. It was the incidental gags like that which made the classic Simpsons so great and helped give the characters so much more depth.