“Marge vs. the Monorail” is one of the most famous episodes of The Simpsons, and for good reason. It’s a classic, an effortlessly quotable episode that’s often a go-to pick when people ask where to start with the show’s now-sprawling list of episodes and seasons. The fourth season’s 12th episode features what it sounds like: Marge trying to prevent Springfield from getting suckered by a con man trying to sell the town on building a monorail. And its popularity has gotten new life now that the show is on Disney+, too, but perhaps it also helped that monorails were in the news lately thanks to the city of Las Vegas.