ooh toughie...I'll just put them in order out of random episodes that I like: 1) Crepes of Wrath
2) Call of the Simpsons 3) Selma's Choice 4) Barting Over and 5) The Great Simpsina. I like more than that, but that's all I could of at the moment.
ok... here goes
Diatribe of a Mad Housewife (the one where Marge writes a book)
Grade School Confidential (the one where Principal Skinner and Mrs Krabappel finally hook up!)
Guess who's coming to criticize dinner? (the one where Homer becomes a food critic)
Bart to the future (at least i think that's what it's called... they see into the future where Lisa becomes president)
the "Mmmmmmm forbidden donut" treehouse of horror (i think it was five)