27. Denver (Season 18; Aired 2006–2007)
I said I've watched every season of The Real World, and I meant it. But there was one season that was bad enough that it drove me to the unthinkable: I abandoned it partway through. The subsequent season (Sydney, which we’ll get to) pulled me back, but ugh: Denver. It wasn't just the unlikable cast — I'd certainly weathered those before and since — it was how boringly terrible they were. Even the most loathsome casts (Miami, Hawaii, Austin, for Pete's sake) build friendships, animosities, some kind of compelling reason to watch them be terrible. The Denver cast members felt like they barely ever met each other. The Colie-Alex-Jenn "triangle" was barely interesting enough to them. Musclebound gay dude Davis used the N-word in an argument with Tyrie and it still managed to be a nonevent.
MVP: Brooke, because if the cast wasn't going to deliver anything in the way of interpersonal narratives, at least Brooke was there to be legitimately crazy and make faces like this.