"A lot of people don't like things the way they are. They might say they need to be changed for the better. But sometimes, things are they way they are for a reason. And if you go and make changes that shouldn't be made, you could end up with a whole mess of trouble..."
Oh yeah. No doubt this remains one of the most infamously terrifying episodes of the entire series. If 'Jaws' made you think the ocean wasn't safe, this will make you rethink just taking a dip in a pool ever again!