Results are in. There were votes for 76 different episodes across 13 seasons of the show. A lot of AMAZING episodes missed out on being in the top 25.
Incredibly, there are no episodes for seasons 1 or 2 in the top 25, and only one episode for season 3. However, this spikes way up after. Grcade's favourite seasons are 4, 5 and 6, they alone make up over half the top 25.
As an observation, Grcade seems to love episodes with songs in.
Here's your list.
1.
You Only Move Twice [S08E02] - 119 pts.
QuotesGuys like me! I'm a guy like me!Oh, the hammock district! Sorry it's not in packages.2.
Marge vs. the Monorail [S04E12] - 105 pts.
QuotesHello, my name is Mr. Snrub. And I come from, uh... someplace far away. Yes, that'll do.Batman's a scientist! I call the big one Bitey. 3.
Cape Feare [S05E02] - 95 pts.
QuotesI say we call Matlock. He'll find the culprit! It's probably that evil Gavin MacLeod or George Guberlindsey.No, that's German for, 'The Bart, The'.It's a good thing you drifted by this brothel!4.
Homer at the Bat [S03E17] - 80 pts.
QuotesLord Palmerston!
Pitt The Elder!Well, I've never met you, but... yes. That's impossible. No one can give more than one hundred percent. By definition that is the most anyone can give. 5.
Mr Plow [S04E09] - 75 pts.
QuotesIt's a pornography store. I was buying pornography. Ahh, the waiting game sucks. Let's play Hungry Hungry Hippos! Um, all of them. They are having a party. Jimmy Carter is passed out on the couch.6.
Deep Space Homer [S05E15] - 72 pts.
QuotesDefault? The two sweetest words in the English language!You're right, Marge. Just like the time I could have met Mr. T at the mall. The entire day, I kept saying, "I'll go a little later, I'll go a little later..." And when I got there, they told me he just left. And when I asked the mall guy if he'll ever come back again, he said he didn't know. Well, I'm never going to let something like that happen again! Three... Two... One... MAKE ROCKET GO NOW! 7.
Lemon of Troy [S06E24] - 68 pts.
QuotesGasp! We've squozen our whole supply. To the lemon tree! Stupider like a fox!And with that, a mighty cheer went up from the heroes of Shelbyville. They had banished the awful lemon tree forever, because it was haunted. Now let's all celebrate with a cool glass of turnip juice. 8.
Homer's Enemy [S8023] - 51 pts.
QuotesSmithers, I've just seen the most heroic dog on television. He pulled a toddler from the path of a speeding car, then pushed a criminal in front of it. Find this dog. I want to make him my executive vice president.Marge, do we have any elbow macaroni and glue-on sparkles? This place is a palace! I mean, I live in a single room above a bowling alley and below another bowling alley! 9.
Last Exit to Springfield [S04E17] - 47 pts.
QuotesSorry, Mr. Burns, but I don't go in for these backdoor shenanigans. Sure, I'm flattered, maybe even a little curious, but the answer is no! The Japanese? Those sandal-wearing goldfish tenders? Ha ha! Bosh! Flimshaw! Alright, let's see... "It was the best of times, it was the BLURST of times?" You stupid monkey. 10.
Brother From Another Series [S08E16] - 45 pts.
QuotesInside every hardened criminal beats the heart of a ten-year-old boy.That was Edna Krabappel. You only get one chance with Edna Krabappel. I hope you're happy.I hope they still make that Shampoo I like...11.
Homer the Vigilante [S05E11] - 44 pts.
QuotesNever ever stop in the middle of a hoe-down. Aw, you can come up with statistics to prove anything, Kent. Forty percent of all people know that. Professor, without knowing precisely what the danger is, would you say it's time for our viewers to crack each other's heads open and feast on the goo inside? 12.
Homer the Heretic [S04E03] - 44 pts.
QuotesAh, another beautiful day in the womb. Lisa, this is neither the time nor the place.Kids, let me tell you about another so-called wicked guy. He had long hair, and some wild ideas, and he didn't always do what other people thought was right. And that man's name was... I forget, but the point is... I forget that too. Marge, you know who I'm talking about! He used to drive that blue car. 13.
Bart vs. Australia [S6E18] - 41 pts.
QuotesThat's weird! I'd have called them chazzwazzers! We don't stand for that kind of crap in America, sir.The streets are safe, old people strut confidently through the darkest alleys and the weak and nerdy are admired for their computer programming abilities.14.
And Maggie Makes Three [S06E13] - 38 pts.
QuotesI ought to be defending myself, but I am paralyzed with rage...and soothing island rhythms.Quiet! I will not hear another word against the boat. In gratitude, I present you this offering of cookies and milk. If you want me to eat them for you, please give me no sign... Thy will be done.15.
Homer vs. the Eighteenth Amendment [S08E18] - 38 pts.
QuotesYou can't seriously want to ban alcohol. It tastes great, makes women appear more attractive, and makes a person virtually invulnerable to criticism. Gone bowling. Not back, avenge death. Swaggering about in a garish new hat, he seemed to say, "Look at me, Rex Banner! I have a new hat!" 16.
Trash of the Titans [S09E22] - 35 pts.
QuotesDid you not learn anything from Love Day? Homer J. Simpson never apologizes! I am sorry, but that is just the way I am.Did, uh, I just hear a briefcase opening? 17.
Homie the Clown [S06E15] - 31 pts.
QuotesOoh. I've never had a pair of pants that fit this well in my life. The same Benedict Arnold who plotted to surrender West Point to the hated British? And your change.18.
Duffless [S04E16] - 31 pts.
QuotesThe man never drank a Duff in his life. My name is Hans. Drinking has ruined my life. I'm 31 years old! Well, Edna, for a school with no Asian kids, I think we put on a pretty darn good science fair. 19.
Homer Goes to College [S05E03] - 29 pts.
QuotesThat wasn't the wallet inspector...Mrs. Simpson, we all have nosebleedsDean, I'm really sorry about the running-you-over prank. 20.
Homer Badman [S06E09] - 29 pts.
QuotesOoh! I feel like a kid in some kind of a store. Two, four, six, eight, Homer's crime was very great! "Great" meaning large or immense, we use it in the pejorative sense! Simpson scandal update - Homer sleeps nude in an oxygen tank which he believes gives him sexual powers. 21.
King-Size Homer [S07E07] - 29 pts.
QuotesYour father can be surprisingly sensitive. Remember when I giggled at his Sherlock Holmes hat? He sulked for a week and then closed his detective agency.The fingers you have used to dial are too fat. To obtain a special dialing wand, please mash the keypad with your palm ... now.I wash myself with a rag on a stick!22.
Raging Abe Simpsons & His Grumbling Grandson in "The Curse of the Flying Hellfish" [S07E22] - 29 pts.
QuotesNow, my story begins in 19-dickety-two. We had to say "dickety" cause that Kaiser had stolen our word "twenty". I chased that rascal to get it back, but gave up after dickety-six miles... Stop your snickerin'! I spent three years on that terlet!Hey, fun boys, get a room!23.
Whacking Day [S04E20] - 24 pts.
Quotes I am Evil Homer! I am Evil Homer! 'Tis true. I took many a lump, but 'twas all in fun. Oh Whacking Day!
Oh Whacking Day!
Our hallowed snake skull-cracking day!
We’ll break their backs
Gouge out their eyes
Their evil hearts we’ll pulverize!
Oh Whacking Day!
Oh Whacking Day!
May God bestow His grace on thee. 24.
Simpsons Tide [S09E19] - 23 pts.
QuotesNyet! That's what we wanted you to think!Even though my religion strictly forbids military service, what the hey. It's my first day. 25.
Itchy and Scratchy Land [S06E04] - 21 pts.
Quotes Oh, everything's too damn expensive nowadays. Look at this Bible I bought - fifteen bucks! And talk about a preachy book! Everyone's a sinner. Except for this guy. We are now approaching our final destination, Itchy and Scratchy Land. The amusement park of the future where nothing can "possa-bly" go wrong. Uh, possibly go wrong. That's the first thing that's ever gone wrong. Attention, Marge Simpson, we have also arrested your older, balder, fatter son. 
http://en.wikipedia.org/wiki/Sam_Simon#The_Simpsons
