I’ll jump on the “Homer vs. the 18th Amendment” wagon.
When the stills explode, and Homer is rolling on the lawn to put himself out - hilarious!
I’m a fan of Burn’s Heir, particularily the audition:
Milhouse: I have nothing to offer you but my love.
Burns: I specifically said, no geeks!
Milhouse: But my mom says I’m cool…
Burns: Next!
Nelson: Gimme your fortune or I’ll pound your withered old face in!
Burns: Oh, I like his energy. Put him on the callback list.
Martin: [walks out as music begins]
Clang, clang, clang went the trolley!
Ring, ring, ring went the bell!
Zing, zing, zing went my heartstrings – oof! [Nelson belts
him]
Burns: Thank you! Give the bully an extra point.
Lisa: [clears throat] I propose to you that your heir not need be a
boy. In this phallocentric society of ours –
Burns: Er, I don’t know what phallocentric means, but no girls!
Milhouse: [offstage, in drag] So much for Plan B.
Homer: OK, boy, I wrote down exactly what to say. Just read it and
you’re a shoo-in!
Bart: [walks onstage, squints at cue cards] Hello, Mr. …Kurns. I bad
want…money now. Me sick.
Homer: Ooh, he card-reads good.
Bart: So pick please me, Mr. Burns.
Homer: {[calling from offstage] It’s “Kurns”, stupid!}
Marge: {No it’s not!}
Homer: {Disregard.}
My favorite line comes when they are driving home and see Burns’ son holding a sign that says “Springfield” o nthe side of the road. Homer looks at him and says “Can’t they get a pole for that sign?”
Another vote for You Only Move Twice.
I must have seen this episode about 10 times before it occurred to me that the above conversation was a riff on planned communities.
Honorable mention goes ot Kamp Krusty, mostly because it has my all-time favorite Simpsons joke:
Burns’ son wasn’t in Burns’ Heir, he was in Burns Baby Burns several seasons later.
Ah, crap.
Why won’t those stupid idiots let me into their crappy club for jerks?
“A tragic end for Homer Simpson…is just one of many outcomes created by our Channel 6 computer simulation. Now, here’s what it would look like if he were attacked by a barrage of baseballs.”
Another vote for You Only Move Twice, but the only reason I’m posting is to say that while I was working I just started humming a song to myself. One of those times when you’ve got a song in your head and you don’t even know where it came from. I was trying and trying to force some lyrics into the hum to try and remember what it was and then suddenly I remembered…
Liiiiike
Myyyy
Loafers? Former gophers-
It was that or skin my chauffuers…
(I had to share that and this is the only current Simpsons thread 
)
But a greyhound fur tuxedo
Would be best,
wait, wait, you sure you weren’t thinking of the Beauty and the Beast song?
ok, ok ok, ok
See MY VEEEESSSSTTT!
See this hat?
'Twas my cat!
I always said that was the best Simpsons parody, and the second best Beauty & the Beast parody. It was only topped by Gerard Alessandrini’s Forbidden Broadway:
Be depressed. Be depressed.
Cause Walt Disney is the best.
Now the biggest Broadway musical’s
A cartoon from the West.
Children cry “It’s a feast, seeing Beautiy & the Beast.”
Now what turns the great white way on
Is a drama drawn in cray-on.
Guys who sing, dolls who dance.
Mob auditions for the chance
To play dinnerware that seems to be possessed…
You’re confusing “You Only Move Twice” with “Two Dozen and One Greyhounds.” “You Only Move Twice” had a song, but it was a Goldfinger parody:
Scorpio! He’ll sting you with his dreams of power and wealth!
Beware of Scorpio! His twisted twin obsessions are his plot to rule the world and his employees’ health!