For my money, the first "National Lampoon's Vacation" and the Christmas movie were the two that mattered.
This is the scene where his "Christmas Bonus" arrives, and instead of being the check he planned to use to put in the Griswold Family swimming pool, it's a one year subscription to the Jelly Of The Month Club:
"I want my boss brought here...with a big, red ribbon on his head, so I can look him in the face and tell him what a cheap, lying, no-good, rotten, four-flushing, lowlife, snake-licking, dirt-eating, inbred, overstuffed, ignorant, bloodsucking, dog-kissing, brainless, dickless, hopeless, heartless, fat-assed, bug-eyed, stiff-legged, spotty-lipped, worm-headed sack of monkey shit HE IS!"