"Party's over," as Lionel enters the scene in the climax with * that* lawnmower strapped to his chest. What follows is arguably the longest, goriest scene ever filmed.
Uncle Les, despite being a greedy, lecherous Jerkass, manages his own crowning moment when he takes up two cleavers and starts hacking the approaching zombies to pieces, dancing on the spot and roaring with laughter. Minutes later, we cut back to find him soaked with blood and smoking a cigarette besides a massive pile of still-twitching limbs.
Paquita gets one when she finally gets to kill the zombified Uncle Les. She rips his spinal cord out (with his head still attached), spits in his face, then twirls the cord around before slamming it down on the floor, bursting his head like an overripe melon.
It's hard to miss because the scene is focusing on Lionel hanging upside from a cord (Long story), but Paquita and Rita fight their way up a zombie filled staircase with only a coat rack and an umbrella.