I’ll go first. Mine is that I can’t stand the Deadpool movies. They are self aware and self referential to an obnoxious degree. It’s like being continually reminded that I am in a movie. I swear the success of that movie has directly lead to every blockbuster having to have a joke every 30 seconds
The Frodo/Sam dynamic comes from Tolkien’s experiences in WW1. A fair example of this dynamic would be the Blackadder/Baldrick dynamic in Blackadder Goes Forth.
Apparently it was a thing where higher class soldiers had a bloke supporting him. Not sure if it was solely based on rank or social status