I like the one where it repeats the day 3 times, with Homer, Lisa and Barts day...that one's just funny

However, my favourite quote ever has to come from the one where Lisa become a vegetarian:
(Pig on tray rolls through bushes)
Homer: Its just a little dirty, its still good, its still good!
(Pig falls in river)
Homer:Its just a little slimy, its still good, its still good!
(Pig gets stuck in dam, and shot out through a hole into the air)
Homer: Its just a little airborne, it's still good, its still good!
Keep On Rockin'