Exterminator: Dr. Weevil
Store next door: Take Me Out to the Ball Gown: Sporty Formal Wear
Burger of the Day: Celery-Brate Good Times, Come On! Burger (references the song "Celebration" by Kool & the Gang from 1980)
The music that plays when Gene and Louise are shooting at the "zombies" sounds a lot like "Eye of The Tiger," by Survivor.