The entirety of "Mummy Daddy", one poor actor's just trying to get to his wife when she's having their first baby. He's stuck in his mummy costume and all the local village idiots (everyone) assume he's the real thing and chase him! With torches no less! Of course Hilarity Ensues.
The episode "Remote Control Man" Hen-pecked Walter finds comfort in a unique television set that brings life-like images to him. First, his wife disappears and turns into the model from the Miss America! His son walks in and his changed into Dirk Benedict! His youngest comes in and Walter changes him into Gary Coleman! And as expected, Hilarity Ensues.
Some card sharks get into the mix, leading to one of them being changed into Richard Simmons and the other a very aggressive football player. Then The Incredible Hulk shows up, later followed by KITT driving through the wall ("Have you seen Michael?") and finally Ed McMahon.
Any scene for "Santa '85" that isn't heartwarming or tearjerking would fall under this catagory.
The episode about two gentle ghosts that try to rid themselves and the home they haunt of two very rotten tenants.
The episode "The Sitter" Has two young boys get the best of every sitter in town, until they meet one who uses voodoo magic that could put Mary Poppins to shame!
From "Thanksgiving": "We have determined this food to be... turkey."