Over 400 episodes, so I'm not ranking them, so just listing my top episodes. Will be updated, when I think of more.

Homer Loves Flanders
Who Shot Mr. Burns
Thirty Minutes Over Toyko
Springfield Connection
Homer and Apu
Its A Mad Mad Mad Marge
Marge On A Lam
Treehouse of Horrors 5
Treehouse Of Horrors 6

More to come...