Here's a couple of my favourite's:
Marge: Oh Homer, you just over exerted yourself today. Let's get you home, get some beer into you, and get you to bed.
Homer: (Running down street) Woohoo, Beer Beer Beer, Bed Bed Bed.
Mr. Burns: Smithers, I believe we may have overestimated the tactical genius of this man!
Homer (Twisting around on the floor): Woop woop woop woop woop woop woop woop woop woop woop!
Homer: Who wants to drive through the cactus field?
Lisa: Me!
Bart: Me!
Side Show Bob(underneath car): No.
Homer: Two against One!
The episode where Homer becomes the truck driver...
Homer: Bart, you can't come with me, you have to go to school tomorrow.
Bart: You have to go to work.
Homer: Ah, touche!