“Your ideas intrigue me and I’d like to subscribe to your newsletter.” - Homer
We use that one a lot at our house.
Among my friends variants on the ‘Please mash keypad with your fist to obtain a special dialing wand’ one are used quite regularly.
Mmmmm…sacrilicious
Mmmmm…forbidden donut
I hear a lot of “My home planet needs me!” (from the Poochie episode) from my husband.
I know I’ve said, “Alcohol…the cause of, and solution to, all of life’s problems” many times.
Well, as I’m of the female persuasion, I might hit it before my father. 
Any Ralph Wiggum-ism. He’s the best.
I say okely-dokely & d’oh! far too much.
Usually on Fridays I’ll ask, in my horrific Monty Burns impression: “Well, Smithers, what are your plans for this evening? Something GAY I presume?”
Fathers, lock up your daughters, Smithers in on the town!!
Exactly, sir.
I am so smart, SMRT!
But it has to be sung.
“Less ____, more _____.”
(based on: “Less chat, more splat!” as Homer is yapping before he jumps of the skyscraper)
one i cant believe hasnt been said yet.
Ass-groove.
We use this one ever such a lot (damned 15 year old sofas…)
Your stink brings tears to my eyes.
“Ow, quit it. Ow, quit it…”
“Nacho, nacho man. I want to be a nacho man!”
Wow! My husband say that all the time.
Mine?
“Hmmm… Forbidden donut”.
“Facts can be used to prove anything” or something of that sort.
“Sorry it’s not in packets”
One of the unfortunate parts of my life is that my brother is the only person in my life who watches the Simpsons, and I don’ t see him that often.
However, I do use Okilee dokilee and MMMMM (food) quite a bit, out of habit more than anything else.
I have also told my wife when she starts watching Cops or American Idol… If you need me, I’ll be in my room.
Not in general use, but a favourite that comes up during those incredibly annoying phone calls:
You have selected - - - Regicide. If you know the name of the king or queen being killed, press one.
“Aaaaaah! Deaaaath!!!”
“Oo, look, a bird!”
“Steak?”—“Money’s too tight for steak.”—“Steak?”
“Oo! Floor pie!”
“I’m washing my fat-guy hat!”
“Don’t let your mouth write checks your butt can’t cash!”
“I make 'em with two kinds of chee-eese!”