The Beach is the best one. The last confrontation between Ellie and Abby is my favorite moment in fiction, simply because it makes me more emotional than any other work of fiction ever has before.
Man, you reeeeeeally like The Last of Us, huh? It's always fun to see quizzes come from the heart :). I've never actually played it myself, but I've heard that the first one is really good.
In my opinion, the sequel is even better. I understand why people hate it, but I disagree. That's not to undersell the original, though. It's still an absolute masterpiece, it's just that the sequel does it better in my eyes. And yes, The Last Of Us and its sequel are two of my favorite games of all time, and The Last Of Us Part II is my favorite non-Nintendo game of all time.